Yellowcard is a great band for good road trip tunes. Rough Draft is a great one. I guess the acoustic guitar and the mellow-but-upbeat vibe of the song is what makes it so good, but it's a great song overall. Afraid, How I Go, and Space Travel are also good ones.
Another band I love to listen to on the road is This Providence. They're one of my favorites regardless, but The Road To Jericho Is Lined With Starving People is perfect for long drives. Could be the Beatles vibe it gives off.
Cinematic Sunrise is Craig Owens' happier side, which much to my surprise, is actually bright. Perfect for long drives! I really love Ethan's Song and Umbrellas and Elephants...gotta love that girlyman voice.
I found a few new bands here recently through this site, hunting through the Every Avenue simliar artists page…