This has the beginnings of a great game.

Firstly, there are two mistakes that I am happy to see that you don't make.
1. You don't start off with a couple of ridiculously easy levels. You seem to realize that most people are aware how car parking games work. So you don't start off too easy. Good.
2. You don't try to attempt to incorporate an awkward star or medal system like so many of these games do. You seem to realize that most players of these types of games would not move on until they got three stars or gold (or whatever the system's highest score is). Instead you make everything be an insta-kill. This is really, really good. I feel like this is a game that takes the player seriously. No gold medal means you haven't completed the level properly, so you might just as well kill us when we fail. Very well done.

But there are also two major problems:
1. There seems to be currency involved in this game. I have completed the game three times, but I have not found a way to get more than 0 of this currency. This seems to merely be an unfinished feature you forgot to remove from the final game.
2. The game over screen is bad. Really bad. You have to realize that this is the type of game where you are going to die very, very often. The game over screen should not be 2 seconds long. That is way too long to be comfortable. Ideally, you should be able to skip the game over screen immediately and reset the level. Seriously, I am not kidding. When you play an adrenaline inducing game like this, 2 seconds feels like an eternity and you feel really powerless while waiting. Please do not do this in any future games.

Also, when you complete the game, your car just spawns in limbo. Did you not expect anyone to make it through that final level or what? You just literally didn't make an ending to the game!