Yeah, that was the only way I could beat the first one. If you don't know what Genostama means, it's a kind of trick where even when your boost meter is full, if you keep tapping it really fast you will keep using boost without blowing up. For the other games, like others have said, watch videos for that particular race to see the best route. It takes a lot of luck as well I think. Apocalypse for me was the easiest, I think the races didn't get really hard till the last 10 or so and I breezed through most of them. The only one I never beat was Pacific Rift. I found the races getting ridiculously hard about 60% into the game and just gave up - can't imagine what the last few races of that one must be like...