Thanks so much for playing, glad you liked the concept!
For both of the points you mentioned- you're right there's no 'lose state' as such, however, points are deducted both for hitting other cars and not parking perfectly and results in a lower overall rating. The reason I decided to go with this approach was to create a sort of decision point for the player- are you going to be reckless in your driving and parking, which will allow you to park more cars, but then lose out on getting a higher rating, or be careful and accurate, in which case you spend more time parking a single car but get a higher rating!
But that being said, i take your feedback.. maybe i could put in some condition which could limit the number of hits or disallow parking in a totally random direction.
Thanks for the feedback:)