Cops could, when there is no Roadcrew, call the owners of the cars and move them off the roads if they're parked illegally, or turn the engine off for crims that are caught in a pursuit. I like this
Although this was centred around being a passenger, which I do like, police forces all over the world drive peoples vehicles such as when they're being arrested to avoid leaving it in the middle of the road or many other things
Obviously this would have to be used carefully if any LEOs are able to actually drive vehicles in the future, i.e. RTU officers or a certain police rank