Great, but not perfect
It's a decent enough game, but the costs for the upgrades need a bit tweaking. In the beginning, it's very slow going at getting the upgrades. At the end, you get them rather quickly.
The weather balloon frequency seems alright. I can usually manage to hit at least 3 per bounce on a good run, however the propane tanks (is that what they say on them?) and gas stations show up a bit too rarely. The way it is now, barreling through buildings on the ground is almost certain death. For some reason the frequency is higher only in the first mile. Why???
My last complaint is with the Truck Fairy ability. It almost always resets the smashstreak meter, making it nearly useless when going for the larger smashstreak abilities. I realize that it may be something that's supposed to require skill to hit a building instead of dirt when using it, but when you're going that fast, it's definitely more luck than skill.