You don't have to break a window to get in a car or the cab of a truck. I carry in my tool box a plastic wedge sort of like loggers use and a shim with a notch cut in it.
I used to work going and opening doors for folks who locked their keys in their cars. Some cars the alarms have gotten better but up to the last GM one I did a 2004 Park Avenue by using the shim to lift the lock rod no alarms sound.
I think I would just rent a travel trailer for a week or so stop at a truck stop and buy a shower when needed. Saves water the trailer can carry. Do my own cooking and saves on meals too. Other wise your property is safer I feel doing it that way.
Al