2 cars vandalized in 1 week on my street.

[insane]

I can't help but think this house could be next. I work overnights so a lot of time my car is gone when they would fuck a car up. First car they took on a joy ride by fucking up the ignition and then took the tires and put the car on blocks.
It was scary because they parked it right by my car on the side of the road. The next one I saw a lady calling the police and her back bumper was pretty much knocked off the frame and sitting on the street. Its pretty fucked up someone has nothing better to do than ruin something someone worked really hard for. I am not sure what I can do other than lock my car. I know if I catch whomever in the act they are getting fucked up.
what would you do?