This name is quite ok, would suit a information portal for the topic. The terms "car travel" don't seem to have very high overture number. Anyway, I think if you got $20 for it you should be happy. Perhaps waiting a few years for the right end-user may be your best bet. By the way I have airtravel.1nfo and I have plans to develop it... I think that is the best way to make money on such domains.