well my wife says use her fathers ford 350 super heavy duty diesel 4 door a/t with everything there , electric brakes etc, 65,000mi on it, and never gets driven anymore because her father passed away 6 months ago ,and her mother does not drive it, mpg about 17 empty, loaded with 5th wheel camper about 13 ,but instead of taking 2 cars now just 1 , but you see it's a family thing again, if something needs repaired ? or accident ?, but it should be driven and not just set , only driven 700 miles in a year, which her father could no longer drive it etc...