One Car / Most A spec Races

Off the top of my head: Lamborghini Gallardo. If that were the first car you were given, I'm sure you'd be able to take it pretty far before needing a second one. After that, and little less realistically, probably the RedBull X2010, Formula GT, or any other LeMans Group C car.
 
The Gallardo can enter 16 out of 45 events, not including Endurance events. It can only enter two of the nine Beginner events. Is there nothing better? Something Japanese maybe? There are five Japan exclusive events.
 
After that, and little less realistically, probably the RedBull X2010, Formula GT, or any other LeMans Group C car.

If you want a Japanese car for those five events, go for the Mazda 787B, Toyota 88C-V, Nissan R89C or R92CP, etc.
 
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