First, points off for the vacuum sound. You should never sink to the level of using Mom's Hoover for sound effects. Unless, of course, you're providing sounds for a, you know... vacuum.
The game itself... completely "meh." There is sadly nothing that this game does, that one of its predecessors doesn't do better. Consider an extra point or two added for trying to have slightly more complex level designs than the Earn To Die series though.
My biggest gripe with this game, though, is the third level. The game is simply too clunky to allow for the pixel-perfect responses needed. Additionally, about two thirds of the way through level 3, there simply ceases to be any more time bonuses, or if there are any more, they're too far from the previous one to allow completion. Also, bonuses are simply that, bonuses, something extra. The player should never be required to collect every single bonus to finish the game.
To the positive, the creator did make a fair attempt at creating this, though should strive to balance the game just a bit more before the release. I hope the creator doesn't take this as being too negative. As it stands, upon reaching level 3, the game simply breaks down into an exercise of frustration.
Perhaps three improvements that might be made:
1. An upgrade that adds an amount of time inverse to your current time total. Put simply, it squeezes the time bonuses for an extra second or two when your clock is almost out, but adds less if your total is high. The cost should naturally be much higher than the current upgrades, maybe 1000 or 2000.
2. An upgrade that allows the car to rotate faster.
3. Revamp the levels a bit so that you can't get stuck. In level 3 especially, there are several points where if you miss a jump, it's simply game over. I think it would be beneficial to add alternate routes so you can't get stuck under a platform, but have to take a slightly longer route to get back to the main course.