Usends.com has some good reading. I'm an highway junkie, so far I've done 66, 64, 431 231end to end. Alot of 41 and 31 from north end in Michigan to Birmingham Al. and tons of sections of others. Try to work them into our vacations. We just drive on alot of our vacations. Have a 2yr old and 1 yr old right now so we have to wait a little while for a major drive.