Of course not.
NO.
The best thing to do is to get the area damp with water before sticking the plunger to the side of your car. You are going to center the dent with the plunger and firmly press it against the area and the pull it out just like you were using the plunger.
Car hopping is the act of walking down a street, usually at night, and casually checking every car on the street to see if it is unlocked. If a car is found unlocked the car hopper searches the car for valuables to steal.
It is legal for a garage to hold your keys in the office, but is illegal to keep them in the car unlocked! Sue them if they have kept the keys in the car, youll be rich!
if the car is locked no if its unlocked yes
There is no separate switch. It is unlocked when the car is unlocked.
No, a drain plunger is not designed to open a car lock. It is typically used to clear clogs in plumbing rather than manipulate locking mechanisms. For unlocking a car, specialized tools or methods, such as a slim jim or a locksmith's assistance, are more appropriate.
car
to alert you that the car has been unlocked
one with the doors unlocked and the keys in the ignition
Ron Weasley unlocked the car with "a series of taps from his wand." Presumably the car required a pattern to be unlocked rather than a spell - just like the entrance into Diagon Alley.
Stealing something? If it's not your car it's probably breaking/entering.