Blast Corps was an interesting game. When it worked it was awesome fun, and one of the best hybrid racing, driving games around. However, when it didn't work it was a frustrating mess. Some of the vehicles were just not enjoyable to play as, and some of the levels were truly ruthless and unforgiving. I liked the game quite a bit, but the bonuses at the end of the game, were some of the best rewards a game ever had, and I bet several people never saw those levels.
I really hate levels and secrets like that in games...locked away from most gamers ever to see them.