You are not a rich guy, so you can't buy a new car. It takes you years before you can buy your own car, but it is worth it. The car is broken and needs a lot of cleaning because it is very old and is left in the garage for a very long time. The previous owner didn't bother to even clean it up before selling it.
The game is played via mouse and it is interactive. The idea here is to clean the car and have it repaired. You will know what to do since that will be highlighted in the game, but it won't do it for you. You need to click it before it can start. The game has three levels and you can only unlock the preceding levels once you cleared a level.