I agree. The thing I'm concerned about is that reintroducing cars into these areas is a trickle opening onto a floodgate in terms of causing us to backslide in

I agree. The thing I'm concerned about is that reintroducing cars into these areas is a trickle opening onto a floodgate in terms of causing us to backslide into car-centrism. And by your argument ADA compliance becomes a good excuse to erase all the pedestrian- and cyclist-only areas and replace them with "good old" city streets again. It effectively becomes an argument for people who want car-centric infrastructure only to disguise their desire and hide behind the disabled to accomplish their goals. What I'm wondering is if there's a way to accommodate without using cars? In a market we could provide some scooters or other motorized transport that's more compatible with the market's layout.