Electrifying an old vehicle is elaborate and expensive. Sixty-plus years ago, car designers weren’t thinking about where to put a massive battery. Moment Motor Co., an Austin shop, has converted four of Henry’s cars. The crew starts by taking a 3D scan of the engine bay, transmission tunnel (basically, the car’s plumbing), and trunk. Then the data is loaded into a CAD model to determine where to fit the power pack (as is most often the case, multiple small batteries are used).