Rental Car fees for crossing state lines
 

I believe I saw on TV a while back about some rental cars having GPS installed so that the customer could be charged a fee if they crossed from one state to another. Has anyone actually run into this? If so, what rental company and what states?

I've never heard of any rental car company where you couldn't drive into another state with the car, so long as you return it to the same one. The only exception I can think of is maybe going into Alaska, but you'd have to go through Canada to do that, or put it on a ferry.

My husband rents from Hertz often and we always gets the GPS system because he needs it. But answering your question, there is no additional fee from CT to NY or NY to NJ -- or any other state for that matter. But he has heard that they install GPS systems to find out if you are speeding.

Enterprise was offering unlimited mileage IN THE STATE OF CALIFORNIA for a while and was charging people who drove out of state, they said they had devices on the car that could track it....but I don't know if they really did. I heard that California and some other states outlawed tracking devices on rental cars.

...or, rather, outlawed them when used for that reason.