A personal connection with a vehicle and other reasons can influence an owner's decision to sell a vehicle - or to ride on. Tom knows a 1976 Mercedes 450 SL is a wise investment; Ben diagnoses muscle car fever appraising a '64 Pontiac GTO 389 and a '69 Ford Shelby Mustang GT 350; Chris encounters human emotion in valuing a 1964 Chevy C10 truck and a 1975 Oldsmobile Delta Royale Convertible.