At least one version if available free, with over 100 tracks.
The game keeps top 10 of lap times for each track (with date and what car it was made with), so you can play for years and every few tries get a list score and relatively often break your years old record. (However as I've had one version of the game since 1995 or 1996, it's very hard by now to get in top 10, much less make a record...)