We have written before that the self-driven electric car will deeply transform transportation as we know it. But there are interesting side-effects that will not be good for everyone. Think about cities and states that depend on traffic fines for their revenue. Once the car is in charge, it’s a safe bet we won’t do things like speed, run reds, park illegally, or drive drunk. And that means we won’t be fined for doing those things. That’s going to put the squeeze on city budgets, according to a Brookings Institution report.