Here something they could pull with almost any vehicle...
https://atlanta.craigslist.org/atl/rvs/d/cave-spring-2010-forest-river-rockwood/7195822137.html
Remember people lived for literally thousands of years without AC.
As stated - Solar is not a portable option for AC. A small bumper pull RV will give them what they need (portable power via generator) with a minimum of cost and headaches. Plus a toilet, fresh water and fridge.
Prep supplies for 90 days of sheltering in place. Try to network with a few people you can trust with your life.
If things really HTF - We're going to devolve into Mad Max anyway...
(The good one. Not that crap today... :) )