Been there, done that with a 450 across country from SFO to NYC. It feels about the same as any other small car I've driven on the freeway, like a 2001 Prius. Buffeted a bit by semi's, feel the cross wind when coming across the California desert. No problem to handle that.on the highway at 70 mph may be a different story. Same with passing (or being passed by) semis - could be interesting.