Hey, if they don't fire up the Bat Signal, how'm I supposed to know about it?
On the other hand, NJ might be fun for a new extreme sport - "Drunk Wrangling". Seriously, hang out at local bars and pounce on the lush heading out to his car. After all, its the law.
Take his car keys! Sell the car! After all, if he has it back, he might drink/drive again.
Keep the money from the car sale. It's your reward for making the streets safer.