Bicycles work to all ages, all abilities.
In your case an ebike, trike (etrike?) or even mobility scooter might be a much lighter, cheaper, scalable option.
Hey why not a self-driving e-scooter? Why does it have to weight 2 tons in the first place?
Bike infrastructure is not only for bicycles: its for trikes, wheelchairs, mobility scooters, ebikes.
Watch:
* Who else benefits from the Dutch cycling infrastructure: https://www.youtube.com/watch?v=xSGx3HSjKDo
* 8 to 80, people of all ages cycling in the Netherlands: https://www.youtube.com/watch?v=swqaAIkGtpA