To some people, a bicycle is a toy. To others, its a sole means of transportation. I believe with the advancement in e-bike technology and accessories to make riding more comfortable year-round, there will be a shift towards people treating e-bikes as their sole means of transportation. Perhaps just keeping an older/ cheaper car in the driveway for emergencies, bad weather and long distance trips. Especially if you can see the cost savings on paper.
Owning and operating a vehicle can be expensive. Even if you have a car that is paid off, odds are that you pay upwards of $400 per month or more between fuel, insurance and repairs. In my experience, I generally average between $0.15 and $0.35 PER MILE in costs on my vehicle. If one were to go on a "car-diet" for 3 months and not use their vehicle at all or minimally, it would pay for an e-bike entirely and get you some good exercise to boot. Depending on the size of your e-bike battery and utility costs, to fill up an empty e-bike battery costs somewhere between $0.02 and $0.08. Most people could commute all month long and spend less than $1!!! That's not even factoring in how much fun it is to ride an e-bike (one that is well-made).