Well, I've been called crazy before...
...but never ridiculous! :-)
Check out the Roadtrip Planning link in the green bar at the top and then scroll down to "Solo". You'll get a lot of other good advise there.
Editor's Note: There are three threads, chock-full of solo roadtripping advice:
Jillian's slightly irreverent look at the practice (speaking of being crazy...)
More of Judy's tips and suggestions
First-time solo roadtripper
Just had to keep this thread going
I'm planning a three week trip from Florida to Colorado in Sept and plan on solo tent camping along the way. While it's a little scary to contemplate, I can't wait for the adventure. Reading through these posts has stiffened my resolve and convinced me that I'm not crazy!