I just played the first two levels, and boy do I have a lot to say.
You seem to have an alright idea. Parking games were huge in early 2001-2, and they kind of fell. Having this kind of game around (with an original idea, the wild west) is a nice thing. It's okay.
However, you have the representation of a very, very amateur game creator. I'll give you a small list.
The first thing that's blatantly obvious is the menu. The art and menu style is stereotypical. Roll the mouse over the button, choppy effect, noise that cuts off.
The music loops and never changes.
The parking spot is WAY too sensitive.
There are regular modern cars all over the place.
I got stuck and the damage meter filled up all the way and I had no way to escape it.
Have to go back to the level screen every single time you win or lose a level. Not a big deal, but annoying.
There's probably more, but I only played the first few levels.