I haven't seen anyone broach this subject, but it makes sense to me. If you're going thru the trouble of bringing a generator, I suspect that you might have a propane canister - or it would give reason for carrying a bigger one. I'm not a fan of transporting gasoline either. Has anyone considered a propane powered generator? The only one I can find seems spendy though.
http://www.generatorquotes.com/order/EF ... iS_Bi_Fuel