Been watching and helping old Ford Model A's get around the hills of Branson, MO at the time of this commenting and even just being a support vehicle it has been harrowing to watch these cars go. Biggest issue has been the radiators boiling dry and overheating the motors. As for the wipers. . . .yeah they barely work. Very few use electric wipers on account of the strain on the six volt electrical systems. Instead if you had an "automatic" wiper, it was most likely vacuum operated. A line was ran from the intake manifold of the engine, up the driver side windshield post and to the wiper (Trico was a very common brand for these). As for the brakes, locking them up is a small concern to brake fade. When the brakes get used heavily they heat up, this heat cuts down the brake pads effectiveness to bite the drums and slow the car. Really digging the detail and thought/research done to have the characters properly interact with a 1920's world.