[wlonkly]

I know what you're getting at here and I agree with you in spirit, but:

A lot of life-alteringly physically disabled people can drive cars. For example, lower-body paraplegics and double amputees can use hand throttle and brake controls. Single leg amputees can drive with a single leg, single arm amputees can drive with a knob on the steering wheel, and so on.

And bicycles do not work to all ages in the same way that cars don't. When you can't make safe decisions in traffic a bike can't work. Heck, a tumble off a bike could be the end of mobility for an elderly person.

(I wonder how many places expect mobility scooters to be on the sidewalk vs. allowed on a bike path?)