The sword biz puts me on the road for several long trips every year, 4 hours, 8 hours, and 23 hours at least twice each (there and back again, as it were). The answer for me is "books on tape". Music gets old after a while, talk radio tends to repeat itself, but a good book runs 4-6 hours and really helps keep me alert and interested.
When I saw this question though, I didn't see "how do I get through a long drive" but rather "how does the Sonic, specifically, do on long drives".
For instance, Satellite Radio. I don't tend to use the real radio on long drives because I spend a lot of time swapping through stations to find something to listen to, only to find I was on the far end of coverage and it drops out ten minutes later, or I drive into valleys where I can't pick up anything at all. XM might be interesting if it isn't vulnerable to those complaints... anyone using it on long trips who can report?
Or, on that 23 hour drive, I just pull over in the F150 and nap behind the wheel if I get tired. How nap-able is the Sonic? Will my son/navigator be able to... oh wait, he can sleep hanging upsidedown from a tree branch, I withdraw the question. How is it for normal passengers though?
I am looking forward to driving this little Zippy thing on those long drives instead of the work truck... even though the Sonic will be at its worst, loaded up with a passenger and lots of cargo. Or maybe I'm not... how is it at interstate speed through mountain passes with an extra 1000lbs worth of payload?