I actually thought this was really well put together. Unlike a lot of other games on here, I actually wanted to keep playing it after a few minutes. The story, though it needed polish in some ways, was well above par for flash games, and you should be congratulated for it. Mechanics were largely solid, but I wish I had more to do with my points.
Much too easy. Blue cars are much too strong, with black cards coming in a semi-close second. Opponent AI is nothing to write home about, and often performs very stupid moves for next to no gain.
As a personal comment: the story mode isn't really a...story. It's just a really, really light overview of what the factions are (and not exactly even that.)