Nice game! Congrats on it! I don't know what happened at the beginning, but in the first 2-3 races I didn't get the story. I was pressing X to choose Alex but nothing was happening and then the race would start. Only on the 4th time I noticed the dialog. Which is a nice touch to the game. And, at times the game can start to feel a little dull. As someone suggested, maybe add some power-ups on the track, or maybe more obstacles. Anyway, the idea to build up the speed seemed interesting. Congrats on the game