Now let's talk bicycles. I can't see how they don't become a player in the US transport game much earlier in this scenario. If teens can't get regular access to cars, they'll bike longer. If families only have one car, more women will continue to bike. Young workers will be more likely to bike while saving up for a car. And if there are fewer cars on the road people will naturally feel more comfortable doing it. There are no real technological barriers to bike infrastructure; it's all just about having the demand before someone gets the brainwave. Denser cities with less competition from cars? Encouraging bikes makes sense on a municipal level. Better bike infrastructure means more people will feel comfortable doing it
AS OTL, you would still have people bolt ICE to the frame to motorize, making a moped, then to full motorcycles as pedals are removed for a simple kickstarter