Jimmy's Grandprix is a Commodore 64 racing game developed in 1992 by Beyond Belief. According to Jim Scott, the game would've featured 8 single screen tracks, & 3 cars(2 player with one AI driver). Like Super Sprint, you win races to get money in which you use the money to get upgrades, & weapons. A year later, the game was reprogrammed to go in 32 angles instead of just 16 alongside better collision.
A ZX Spectrum port was also made, & did get released on a bunch of covertapes, but the original C64 version hasn't shown up so far due to Beyond Belief collapsing. A couple of screenshots have been found though.