I recently built a game with similar mechanics (http://www.bigblockgames.com/games/goblin/), and this is basically what my first day of development looked like, just sped up between takes.
Except at least this doesn't create many cars unstable enough that the structure starts oscillating before shooting off to infinity. So I guess GA 1, Michael 0.
Currently, it just attracts people to the site (which it's done in a pretty extreme way). We'll probably follow it up with a level pack that's for sale, though.
In other words, we lose a little on each hit, and make up for it with volume!
Except at least this doesn't create many cars unstable enough that the structure starts oscillating before shooting off to infinity. So I guess GA 1, Michael 0.