[keys]

Expected..

There are simple way to fix this...set a rule ...once charging is complete...send a warning call to the user ..if the car is not move by x min then a charge of x amount of dollars every 30 mins..

If you don't like that..then hire a service to move your car...for as little as say 20 bucks , the valet business will move your car to available parking space and in the morning you can collect the key from them.

Simple