There are two types of classic car owners. Avid gearheads understand the value of having cool rides for fun driving or car shows, treating car collection as a hobby rooted in emotional factors, personal experiences, or nostalgia. On the other hand, it's no secret that investing in classic cars is a fun and stable way to grow personal wealth, and some people prefer to collect cars for cumulative returns.

The market surged substantially in the last decade, and the value of some classic American vehicles has risen dramatically. And with the growing rarity and increasing demand for these vehicles, we've seen their values double or even triple. Unfortunately, some enthusiasts will feel left out since their dream cars got more expensive, while others seek to invest or capitalize returns on the surging car values. Depending on which side of the fence you sit, here's a list of ten American cars that were worthless a decade ago but are now worth a fortune.

Related: 10 Affordable Performance Cars That'll Never Drop In Value

10 1991 GMC Syclone - $50,600

1991 GMC Syclone Pickup Truck
Via: BringaTrailer

The Syclone pioneered big horsepower and performance in the truck space, combining the best of a hotrod and a pickup in a revolutionary way. GMC equipped the Syclone with all-wheel drive, a sports-tuned suspension, and a 280hp 4.3-liter turbocharged V-6, making it a sports car killer.

1991 GMC Syclone AWD Pickup Truck
Via: BringaTrailer

Interestingly, GMC built less than 3,000 units of the Syclone for 1991 and the otherwise non-existent 1992 model year. A decade ago, a well-maintained Syclone went for less than $20,000. However, the value has since doubled to nearly $40,000 on average, with Concours-condition models fetching well over $50,000.

9 1994-'96 Chevrolet Impala SS - $51,800

1996 Chevrolet Impala SS Parked Outside
Via Mecum

The Chevy Impala suffered tremendously in the Malaise Era, but it later turned out to be a diamond in the rough for GM in the mid-90s. Thanks to the 260hp 5.7-liter V-8 pulled from the contemporary Corvette, the Impala SS was faster than sporty American sedans like the Ford Taurus SHO and put upmarket imports like the BMW 5-Series to shame.

Black 1996 Chevrolet Impala SS on the driveway
via Mecum Auctions

Today, the average price for an Impala SS is within the lowly $12,000 mark, but the value of a model in excellent condition is more than double that amount, estimated close to $30,000. On the other hand, the best-kept, low-mileage Impala SS fit for Concours will fetch north of $50,000.

Related: 10 Reasons Why We Love The 1996 Chevy Impala SS

8 1993-'95 Ford F-150 SVT Lightning - $53,800

Red 1993 Ford F-150 SVT Lightning Parked Outside
Via Bring a Trailer

After Ford founded the Special Vehicle Team in 1991, the F-150 SVT Lightning was one of two models launched in 1993 aimed at the Chevrolet 454 SS. The SVT division upgraded the standard two-wheel drive F-150 with a 240hp 351 Windsor engine, alloy drive shaft, lower ride height, better handling, unique front air dam, special 170-inch wheels, and conspicuous Lighting decals.

Red 1993 Ford F-150 SVT Lightning Parked Outside
via Bring a Trailer

A Ford F-150 SVT Lightning in good condition costs about $23,500, slightly more expensive than when it launched in 1993. According to Hagerty's valuation, an F-150 SVT Lightning in excellent condition is worth $35,800 in today's market, while a world-class example in Concours condition demands up to $53,800.

7 1978-'83 Jeep CJ-7 Golden Eagle - $56,800

Jeep CJ-7 Golden Eagle Parked Outside
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Introduced to replace the low-production, long-wheelbase CJ-6, the CJ-7 proved more agile on the trail than its predecessor and still more luxurious and civilized than the CJ-5. Jeep introduced the Golden Eagle trim package for the CJ-7 in 1977, which included a 5.0-liter V-8, a golden eagle hood decal, body stripes, off-road driving lights, wheel lip extensions, rear step bumper, and chromed/anodized front bumper.

Jeep CJ-7 Golden Eagle Parked Outside
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The package also included an engine-tuned instrument panel, a sport steering wheel, front buckets, and rear bench seats. As the last of the CJ series, the CJ-7 Golden Eagle gained value over the last decade, with examples in excellent condition going for $41,600. However, it's worth noting that world-class examples in Concours condition could fetch up to $56,800.

6 1990-'95 Chevrolet Corvette ZR-1 - $79,400

Chevrolet Corvette ZR-1 - Fornt Quarter
Via Mecum Auctions

With imported sports cars gaining ground on the market, Chevrolet made considerable updates to the Corvette lineup and introduced the revered Corvette ZR-1 coupe. The ZR1's party piece was a 375hp 5.7-liter LT5 V-8, designed with significant engineering input from the then GM-owned Lotus Group. However, the 1993 model year saw the engine gain several upgrades to churn out 405hp and 385lb-ft of torque.

Chevrolet Corvette ZR-1 - Rear Quarter
Via Mecum Auctions

According to existing records, slightly over 6,900 ZR-1 coupes rolled out of Chevrolet's Kentucky factory between the 1990 and 1995 model years. With these production numbers declining yearly, a ZR-1 goes for an average of $27,500. At the same time, well-kept, low-mileage examples could demand almost triple, estimated within the $80,000 mark.

Related: 10 Things You Need To Know Before Buying A Used Chevrolet Corvette C7

5 1980 Pontiac Firebird Trans Am Turbo- $81,100

Black 1980 Pontiac Firebird Trans-Am Turbo on the road
Mecum Auctions

The 1980 Pontiac Trans Am was the meanest bird in the second generation flock, boasting GM's sensational F-body, an unmistakable gold and black theme, a unique Firebird hood decal, and a prominent rearward-facing shaker hood scoop. The 1980 model year marked a pivotal performance milestone for the Firebird Trans Am, with Pontiac introducing a turbocharger for the 4.9-liter V-8.

1980 Pontiac Firebird Trans Am Parkedd Outside
Via Mecum

Interestingly, most Trans Am models gained tremendous value in the last few years thanks to their impact on pop culture. The Trans Am Turbo had an average price of about $16,000 a decade ago, but that doubled in recent years to an average of $32,000. We've also seen examples in world-class Concours conditions fetch north of $80,000.

4 1981-'83 DeLorean DMC-12 - $102,000

1981 DeLorean DMC-12 Cropped
Mecum Auctions

Conceived by John DeLorean, styled by Giorgio Giugiaro, and partly engineered by Lotus, it's still surprising how the execution of the DMC-12 missed the mark. With poor build quality, a sluggish 130hp Peugeot-Renault-Volvo V-6, and a substantially high sticker price, the DMC-12 left a lot to be desired.

Silver 1981 DeLorean DMC-12 Rear View
Mecum

However, the plot twist to the DMC-12 story arrived through its memorable contribution to pop culture, starring in the wildly successful 1985 Back to the Future film. As one of the most iconic movie cars of all time, the average price of a DeLorean DMC-12 has risen to $46,600 in the last few years, while pristine examples in Concours condition surpass the $100,000 mark.

3 1966 Ford Bronco - $110,000

1966 Ford Bronco  Parked Outside
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Ford developed the first-generation Bronco as an off-road vehicle to compete against the International Harvester Scout and the Jeep CJ-5. Initially offered in wagon, pickup, and roadster cab types, engine choices for the Bronco included a 2.8-liter inline-six and a 4.7-liter V-8.

1966 Ford Bronco Parked Outside
via Bring a Trailer

Although it sold well, the four-wheel drive Bronco lacked mass appeal or hardcore utility, so the initial production numbers are not as high as current survivorship might have you believe. Today, the Bronco wagon is the most prized cab style, costing an average of $54,400. On the other hand, you can expect extremely rare well-kept, low-mileage examples to demand more than $110,000.

Related: 9 Reasons Why Off-Road Enthusiasts Should Buy A Vintage Ford Bronco

2 2002 Dodge Viper GTS - $113,000

Black 2000 Dodge Viper GTS In A Parking Lot
via Mecum

Dodge made the brute Viper more usable in its second generation, redesigning the chassis, brakes, and suspension to make it more manageable without losing the high-end performance. With a 450hp 8.0-liter V-10 under the hood, the Viper GTS rivaled the Chevrolet Corvette in racing and outperformed models like the Ferrari 355, Porsche 911 Turbo, and Mitsubishi 3000GT on the street.

Black 2000 Dodge Viper GTS In A Parking Lot
via Mecum

Although the 2002 Viper GTS receives criticism for the forged pistons, it's more desirable because of the ABS, not forgetting that it's the final year of the second generation. Currently, a 2002 model in good condition fetches about $58,700 on average, while pristine, low-mileage examples are worth almost double that amount.

1 1993 Ford Mustang SVT Cobra R - $156,000

Red 1993 Ford Mustang SVT Cobra R Parkedd Outside
Mecum Auctions
 

After releasing the Mustang SVT Cobra earlier in 1993, Ford's SVT department didn't pull any punches with the race-ready Mustang version, the Cobra R. Compared to its predecessor, the Cobra R shed 450lbs of excess weight and boasted an engine oil cooler, power-steering cooler, larger brakes, and Koni shocks and struts.

Red 1993 Ford Mustang SVT Cobra
Via: Mecum Auctions

The top-tier Mustang SVT Cobra R is arguably the ultimate version of the legendary Fox Body Mustang, equipped with a 235hp 5.0-liter Windsor V-8. Considering Ford SVT built just a scant 107 units, the Cobra R is a highly-coveted Mustang worth $74,500 on average, with a few world-class Concours-condition examples fetching well over $156,000.