The car I'm currently sometimes able to use is a throwback to the early 90s, with only a tape player and radio for musical selection. The tape player spits out those tape adapters you can use with an iPod, leaving me with the radio.
Bad as radio is, I spend hours with my finger on the "seek" button trying to find a decent song. I tend to average about one per twenty minutes of constant seeking. It passes the time and isn't as sleep-inducing as the hum of the tires on the road.
In Boston, there is a fairly decent selection of stations from which to choose: rock, hip-hop, classical, pop, and fringe indie stuff. I noticed on my way back to Western MA from Boston yesterday that as I progressed further into the country, the more and more the main choice of music was country. By the time I was still a half an hour from my home, the overall number of stations had dwindled from over twenty to less than ten, of which five were playing solid voice-twangin' boo-hooin' crapass country music.
Really gives you an idea of the kind of place I live in.