I love <3 tobin, but I kinda think "Always" makes a better driving tune.
All the same, I have never heard Easy Muffin so thanks for posting it.
As for my favorite driving song, well it totally depends on the car. I drove a really effin cute VW cabrio for 6 years, and with the top down, the best song for convertible teeny-bopping fun was and will always be...