For this proposal I suggest a computer or a phone which will allow dispatch to do that which police car computers can do.
That means, the checking of license plates, home owners and such. That way, the police have more time to actually investigate and keep an eye out, rather than typing into a computer; as such it will also give dispatch a more useful role, rather than simple micro-management and emergency calls.
Example:
Police officer:
This is officer 475, requesting a check-up on license plate number: "F.R.O.S.T.I.E.S"
Dispatch:
Roger... The owner of the vehicle is "Jordan Humber": wanted for reckless driving.