People have been tinkering with and modifying vehicles since not long after the invention of the automobile. As an activity, it exploded in the wake of World War II, as surplus machinery mixed with bored young people with a bit of mechanical knowhow looking for a bit of a thrill. From hot rods and desert speed racers to the import-tuning scene at the turn of the century, being able to soup up one’s ride has been a core aspect of car enthusiasm. But that may be a thing of the past, if the next Ford Mustang is any indication.