If there are traction laws in place for highways/interstates, then you will need to have chains/socks for your tires since it's not 4WD/AWD. There's also a decent chance the highways will be bone dry, and you could be walking around a mountain town in a light jacket. Where would you be driving from? You will absolutely need to make a plan A, plan B, plan C, and probably D/E/F/G.