Some of mine. Maybe not that obscure really, but:
Star Wars Episode 1:racer. Podracing game. Actually pretty cool.
Re-Volt, a kart racing game where you play RC cars.
The weirdest of the bunch: Vangers, a russian-developed scifi car exploration/combat game I honestly never got very far in because the UI was unbelievably muddy and hard to read.
@vahnj I know it's actually pretty good! Cool mechanics and level design. Unfortunately I've tried replaying it and doesn't quite hold up as being decent at games now makes it way too easy.
@vahnj huh, I found it all pretty easy? but maybe that's in part because I've sunk in an absurd number of hours as a kid and have the muscle memory.
@vahnj That One Sky City invitational track with the narrow rail-less paths is always hard though.
@starkatt *remembers* aaaaaaaaaaugh it was so hard
@vahnj knowing basically all the shortcuts in the game probably helps too.
@starkatt I imagine that's true for early game - I revisited it a few years ago with my old save file and late game racing was real hard for me because of just how fast the racetrack goes by!