Look for it yourself.
By this, I assume you mean have a human police officer use biological eyes to scan streets and parking lots for a stolen car or it's license plate number. This is a very expensive and inefficient way to solve the problem.
There are a lot of problems that are best solved by government entities. Like any business, the government should strive to solve these problems as efficiently as possible. The issue is that a lot of the process or technological improvements that we can put in place (like license plate scanners) reduce price so dramatically that the net can be cast much wider. Instead of looking just for cars that are involved in a kidnapping, we can look for cars that are involved in any crime. With this increased productivity comes the real risk of overreach on the part of government.
Your proposed solution seems to be to not allow government to have access to these cost saving improvements. That's impractical, as well as a bad decision from a financial perspective. Rather, we should, as GPP points out, have rigid oversight mechanisms, checks and balances if you will, to insure that government doesn't overstep it's bounds.