So the IPCC are now involved. No doubt the Police will be criticised. The perpetrators know that chases will be called off if they drive dangerously.
In this country the police will sometimes try to surround a car to bring it to a stop. In the US a police car will nudge it so that it spins and if it crashes so be it.
"Don't think of them as problems, think of them as opportunities."
"OK, I think I've hit an insurmountable opportunity!"