Well here is a little story admitting the capability to track travel time, it mainly talks about florida but you can obviously apply it to everywhere. Florida transponders are now going to a 4th generation credit card sized version (I believe its the 4th) just like those fancy security chips embedded in CC. Pretty slick. Anyways here is the story, obviously the abuse of this sytem could be around the corner but as we have discussed, the implementaion of ticketing people would leave the multimillion dollar system baren with out users.