A successor to the original pre-war designed Fiat 500 "Topolino", the 1957 Fiat 500 was the car that put Italy on wheels... well, four wheels. Designed for maximum economy of materials and with an eye toward efficient packaging of internals, the rear-engined 500 had twice the passenger capacity of its two-seat predecessor.
The one in the photos here is a late-production 500F, distinguishable by its normal front-hinged doors.