I've done Seattle to LA and back 8 or 9 times last year, only 3 or 4 this year. Another driver can be good, one can sleep the other can drive. Also have done Buffalo to Seattle, and recently Little Rock, Ar to Seattle. Before these trips like to stay up late get my-self accustomed to being up in the wee hrs. The second you feel tired pull off into a rest area, walk around a bit, maybe even power nap 30 minutes. Lit gas stations are better places.