Aston Martin Atom Concept
The Aston Martin Atom is a prototype car, constructed in 1939. Designed by Claude Hill, the body was aluminium over a tubular steel frame, and a marked change in design from previous cars. It was originally powered by a model 15/98 engine, but subsequently upgraded after the war with a 2-litre engine in 1944. Apparently, after driving the Atom in 1947, David Brown was decided to buy the Aston Martin company.
The car currently resides at the Heritage Motor Centre, Gaydon.
Source: Wikipedia, 2011