Car auctions are always amazing. But they are even better when some unique machines go under the hammer.

It is quite rare that such cars do go under the hammer at auction, but man, RM Sotheby’s has got some amazing cars going out for auction right now.

Perhaps some of the rarest cars in the world, they are auctioning off three Alfa Romeo Berlina-Aerodinamica Tecnica concept cars. And they could go for a staggering $20,000,000…each!

The Holy Trilogy

via RM Sotheby's

I am sure you are asking for more details on these amazing cars, so let's get straight into it! There are three chassis going up for auction. There is the 1953 Alfa Romeo B.A.T. 5. The 1954 B.A.T. 7 and the 1955 B.A.T. 9d.

These cars are perhaps the greatest concepts ever made, and some of Alfa Romeo’s finest machines. They were designed by Franco Scaglione and handcrafted by the fabled Carrozzeria Bertone of Turin, Italy. And of course, introduced from 1953-1955.

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via RM Sotheby's

The amazing aesthetics minimized drag as much as possible, to get the very best performance out of the cars. Each car is unique with its own details, and they are all variations of one theme.

Full details will be provided in the link detailing the auction. The cars weighed no more than just 2000 pounds, and the top speeds of the cars were around 123.6mph. B.A.T. 5 has jet-like looks, and the design evolved over the next two cars. 7 saw narrowed front air intakes and the hood was lowered by over two inches.

The Ultimate Concept

via RM Sotheby's

9d was aimed at being much more practical for road use, as the other two were particularly wild. The funs were reduced in size to improve rear visibility, and the rear wheel skits were eliminated altogether. This was the ultimate evolution of the Berlina Aerodinamica Tecnica concept.

The average Joe like you and I may never be able to afford these machines. But we can marvel in their unrivalled beauty, and enjoy how amazing they are.

Sources: RM Sotheby's, Classic Driver

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