You can also walk. Lovers of freedom can walk from Manhattan to LA in 40-50 days. Of course if you look “wrong”, you’ll probably get rounded up in some flyover town.
I wonder what the chances of surviving that trip is, based on walking pedestrian fatalities on highways.
Depends on where you walk the US is amazingly poorly situated for long walks outside of major cities. Sidewalks disappear first then lighting then one is liable to run into major stretches with no safe affordance for walking whatsoever where one is either inches from cars or in a ditch.