Lots of games have the clutch implemented. Papyrus' Nascar Racing 4/2002/2003, Grand Prix Legends, Viper Racing Series, F1 2001/2002, Grand Prix 3. Any game that claims to be a "true" racing sim SHOULD have a clutch modeled. Somes games model it better than others, with the Nascar series and Grand Prix Legends being the best out there.
But let me tell you, if you can drive onw of the cars in Grand Prix Legends at full realism with no driving aids, then you really know what you're doing. The games models the Golden age of Grad Prix racing in the 60's, when the cars were little more than bathtubs with huge motors slapped on. No wings, no downforce, no ABS, tires that were hard as hell and could last you 3 or more full races. Just you and the car. Truely a synergy between man and machine.
I can't drive one of those things more than a lap without wrecking. I suck at teh Grand Prix.
