I'm not 100% if this unlocks in the tutorial missions, but these are very easy to complete and at least 2 of them featured a police car for me. In regular missions, keep an eye out for a police car, when you find one try to move it towards your character without wasting too much turns. You might have to buy a few extra, or wait for a level with an easier set up. The achievement pops when you reach the finish in the police car.