Bugatti Type 57S Atalante
The Bugatti Type 57 and later variants (including the famous Atlantic and Atalante) was an entirely new design by Jean Bugatti, son of founder Ettore. Type 57s were built from 1934 through 1940, with a total of 710 examples produced.
Most Type 57s used a twin-cam 3257 cc engine based on that of the Type 49 but heavily modified by Jean Bugatti. Unlike the chain-drive twin-cam engines of the Type 50 and 51, the 57's engine used gears to transmit power from the crankshaft.
In 2008 the Bugatti Type 57S with chassis number 57502 built in 1937 with the Atalante coachwork for Francis Curzon, 5th Earl Howe was discovered in a private garage in Newcastle upon Tyne, having been stored untouched for 48 years and known about only by a select few people. It was auctioned in February 2009 at the Retromobile motor show in Paris, France, fetching €3.4 million (~ US$5 million), becoming one of the highest valued cars in automotive history, owing much to its extremely low mileage, original condition and ownership pedigree.
Source: Wikipedia, 2011