License, registration, home, visiting.... oh my!

Used to be and may still be. Consider three items: The state one is pyhsicslly in, the state that issued the drivers liscense, and the state the vehicle is registered in. As long as two out of three are the same it is legal. If all three are from different states I doubt it is legal. States also have individual reguirements that may not all be the same so have to check with the state one calls their residence.