I don't have a car, and I like trucks and bikes, but I like this playlist, minus a couple bands. There are also some bands that I'm not familiar with, but that gives people a chance to see if they like them. A lot of the songs are sticking to the theme, but some aren't, which is alright, too, because it mixes it up. I see that you have a new picture on it. The old one looked better, but you should get a shot from inside your car to the road, or of your car in front of a famous place that people stop at, on road trips.
I have a couple suggestions for songs, too, and I won't be offended if you don't use them. I have a starter playlist for a road trip that I put them on.