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Future Race rulesGrimm
I think someone used Faustus Furious (a chariot racing game) for rocket bikes.
Given that I'd never heard of them, a link would seem helpful: http://futureracegames.com/ They sound interesting, and ambitious in scope. You got a review of the mechanics?
https://boardgamegeek.com/boardgame/27491/future-raceOriginally published by Jodie Press, the folks who brought us G.A.S.L.I.G.H.T., I think the author is now self-published.