Crowmaw,
The last pursuit I heard in person over the radio before I retired was a situation like you were talking about. A Motor Officer started to stop a car for a traffic violation when he read the plate to dispatch it came back as just stolen. A few minutes into the pursuit a supervisor tried to call off the chase using the exact same justification, that we had the license number and could go get the owner. It was perfectly correct too untill an unnamed Officer who disguised my, I mean his voice, and told the supervisor we already had the license number and owner info from the stolen reort earlier that day. It kinda made the license number a bit irrelevant to the pursuit conclusion.
Another factor to consider is that it usually only takes a screw driver in a school or other parking lot and about a minute to obtain a fresh license plate for your ride. Darn ya just can't figure on the plate giving you all the info you need to solve the crime.

Final factor is this, in order to prosecute for the chase we had to catch the actual driver who was making the car go, not the person who provided the money for the registration. They were not always one and the same.