Although I have never belonged to CAA or any other roadside assistance club, I do belong to GWRRA and have for 6 years. For those that don't know, it's basically a social club for Gold Wings and other motorcycles.
Along with membership they offer towing within 100 miles, and for about $25 extra, they also will include any vehicle in your household.
Driving a Subaru, a Honda Fit and a Honda Gold Wing, I never really expected to need their services and viewed it as a bonus.
Well last summer we had a flat coming out of Redding, Ca. Due to the slope of the highway shoulder and the ass-end of the bike being low, I couldn't put the sidestand down so had to ride it about a half mile to an exit. There I called the 800 number and within less than an hour the bike and trailer were on the tow truck and off to the nearest Honda dealer.
Two hours later we were back on the highway, minus a few bucks for a new rear tire.
It was cheap insurance and something that I will definitly renew every year.