@tsarstepan,
Good point - in that even in New England - for example, if I were to go from MA to Maine - Maine does not want us. I do not know the specific details, but you may not be able to get hotel for example, or you might have to be quarantined for 2 weeks.
Different states have different rules - but in general, the southern states seem to be more open; and New England more closed - with others scattering depending on the state.
Better to read up than be sorry. The other worry --- if you are driving a distance - where will/can you stop to use the restroom.