Chequered Flag / Brum-Brum
During a recent inconclusive search for a nebulous car racing game I noticed a couple of dubious categorisations. Namely, the venerable Chequered Flag, which seems to be the only car racing game filed under Sport:Action; and the obscure - but rather cute - Brum-Brum, which seems to be the only car racing game filed under Simulation (well, there's Grand Prix from Sinclair User, but as that's text-only it can hardly be filed under an Arcade/Action heading).