Cops are going to hate not being able to wag their proverbial dicks and humiliate people at minor traffic stops when driverless cars become prevalent. They'll probably take it out on jaywalkers.

Came here to say that. Driverless cars, by their very nature, are inadequately equipped to respect the officer's authority. And they can't blow the officer, even if it's a REALLY expensive ticket.

I'm sure they could add an officer blowing attachment.

Makes me wonder if police unions and/or private prison companies will lobby against them.

Most certainly. And small towns will definitely outlaw them. A vehicle that automatically obeys the law is bad for revenue.