Enduro on the 2600 was OK last time I played it. Rad Racer / Highway Star too. Road Blasters was in Retro Gamer recently, I've not played it but it looked good.
Super Sprint was an immensely fun game! Its similar to Super Off Road, but with racing. Super Sprint Championship edition on the C64 had a track editor which provided hours of fun for me back in the day...
Test Drive 2 on the C64 was also fun... Oh, and the classic spy hunter!
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