I would never flat tow anything more 10 miles at most. Too many things to go wrong. Dolly at the least and preferably a trailer. Tie it down at all 4 corners. If you strap to the frame, pull it down hard enough to compress the suspension. If you tie to the axles, strap it down solid but it will bounce the whole way because the trailer springs and the towed vehicle springs will both be active. And make sure the trailer lights are good. The PSD will haul a car trailer like it's not there. If it's a 1/2 ton, be careful to get the load centered over the axles with 10% of the load as tongue weight. Pull the vehicle onto the trailer until the tonge drops about 1 1/2 - 2", you should be good. If it's a 3/4 or 1 ton, they are pretty forgiving as long as you have some decent tongue weight.