In recent years, collectible cars — rare vehicles representing milestones in automotive history — have skyrocketed in value as high-end art, becoming a newly-sought trophy for titans of industry. Yet just as with any art, the growing demand for these cars is also attracting forgers and thieves. Criminals have pulled off elaborate heists of million-dollar vehicles, sometimes smuggling them out of their country of origin, retrofitting them with fake paperwork, and reselling them on the interna...