The Mark-Almond Band's What am I Living For is only vaguely a road song; it's mostly a love song that briefly mentions hitting the road. I've posted the song - along with the ones below - more in response to a long-ago post by Stephanie Zvan at Almost Diamonds than as a continuation of my fairly unpopulated road song series. Stephanie said, "The Best Love Songs ...are the ones that look beyond the first blush." Her songs reminded me of What am I Living For, and that song then reminded me of the next two songs, which aren't road songs by any stretch of the imagination.
Only one website (that I could find) lists full lyrics for the Mark-Almond Band song; the lyrics are correct, some of what he's written about the Allman Brothers (totally unrelated to the Mark-Almond Band, and totally unrelated to the singer Marc Almond) is inaccurate.
Mark-Almond Band: What am I Living For
Album: Rising, 1972
Jim Croce: Time in a Bottle (a video here)
Album: You Don't Mess Around with Jim, 1972
James Taylor: Fire and Rain (lyrics and story here)
Album: Sweet Baby James, 1970
P.S. I saw James Taylor in concert in 1971 in Virginia.