There are no cheap options, beetle, and you get what you pay for - the cheapie companies you see advertised on late morning cable cover essentially nothing. The high-deductible plans are more affordable, but ... the deductible is high. They prevent catastrophic financial damage and get you the insurance "discount", but you'll pay a lot out-of-pocket. There may be a way to get a plan that's effective only when you're in the country, which would save some bucks.

This Esurance Online Car Insurance — Get Your Quote & Save on Auto Insurance will show you some options, although I've been able to get the same deal contacting the companies directly. (Don't let the title fool you - there's medical on the site too).