Well, we have drunk driver roadblocks, seatbelt roadblocks, insurance check roadblocks, lack of license roadblocks, child seat roadblocks, so having to swipe your driver's license at each county line and city limits should be acceptable.
You're kidding right? You're advocating the step from a check for proper operation of a motor vehicle to government controlled movement and surveillance of it's citizens.
I'm amazed at how many people, here at FR even, are so afraid of terrorism (isn't that the whole point?) that they'll slough off the last vestiges of freedom because the fed says it'll keep them safe.