TLDR: Looking for a 3+ wheeled vehicle that can be locked up like a bike and maybe taken on a bus.

So my sister has health issues that means she can’t drive/get a license, and that she’d most likely fall over on a scooter. She mostly walks/busses around, but the bus system is closed on sundays and makes life difficult.

So yeah, wondering if there is anything that would be allowed on sidewalks/bike lanes with 3+ wheels and a bit more speed than walking so she can increase her range that she can get to, but like be able to be chained to a bike rack.

IDK bit of a stretch, but maybe you all know something!