During the show over the years, it was disclosed that Frank had a number of health issues - Crohn’s disease, back surgery etc were mentioned. Had to be difficult dealing with those issues while traveling thousands of miles in a van. The other guy, Wolfe, was the smiling, extrovert personality guy while Frank was more quiet, mercurial, serious and loved collecting old cars and motorcycles. Those health issues are very painful to be constantly on the road riding to very rural areas in a van. Was an interesting program. Sad he passed so young and so sick.