San Diego (Oceanside) to Provo Utah Best Route Fires 15

I would tend to go with your hubby. Worst case you might get delayed a bit but generally the interstates are kept flowing as much as possible. On the upside, you do have a MH with food, fuel, water, genny, AC and generally all the comforts of home so a slight delay en-route isn't a big deal..just travel smart.