For the Boardgame Championship Formula Racing , Each car is 25mm long, 10 cars on one sprue.
Modeled after the 1983 season cars.
See review of the cars for Championship Formula Racing at :
https://boardgamegeek.com/thread/2517014/shapeways-cars-review
2 X Mclaren MP4/1
2 X Brabham BMW BT52
2 X Renault RE40
2 X Lotus 94T
2 X Ferrari 126 C2B