Lotus III: The Ultimate Challenge
This game featured 2 modes of play - one has you racing against 19 computer rivals, and the other pits you against the clock.
There are 13 different types of races, ranging from Motorways to night-time to sections punctuated by roadworks, and some are lap-based with others being simple A-B. 2 players could play on a split screen mode.
The game's crowning glory, however, was the RECS editor, which allowed you to create courses of your own, with theoretically millions possible.