It looks like they should have the line of possible impact and time of possible impact down fairly well as it approaches so it would probably only be necessary

It looks like they should have the line of possible impact and time of possible impact down fairly well as it approaches so it would probably only be necessary to drive a couple of hours, have an asteroid watch party and then drive a couple of hours back for most people. Of course if it took out your home then things might be awkward. Maybe take a tent.