-1
Reason for this is discussable, because there is a lot if people that work as mechanics and issues like flipped cars and empty gas already has solutions which is:
Flipped cars: Can be solved with /mechanic
Out of fuel: Buy Jerry cans to refuel car and for this you either need to call a taxi(which this makes taxi drivers earn money) to go to a shop or call a friend to bring you one from a shop, which shop owners earn money from this.
If developers make pushing cars a thing that means that they need to get rid of the /mechanic command because you won't need to use it and Jerry cans would not have any use in game so shop owners are not going to be happy about this.