After all, bicycles are clearly vehicles, and bicycles and wheelchairs are both things with metal frames, wheels and seats designed to convey humans around under their own power.
Other than the placement of the wheels, the main difference is the character of its use.
Which I guess is part of the point - the rule specifically does not say anything about use, only presence - but people (including me) are still interpreting the rule with a "usage" axis. Perfect demonstration that the "simple rules for Internet content that are easy to apply" assertion has fallen over at the first hurdle.
I think, just being overly annoying and literal, that the game shouldn't be answered by asking whether anyone would call a wheelchair a vehicle, but whether a wheelchair is a vehicle in the sense meant in the rule statement. I don't think it is, personally, though it's probably the closest non-vehicle in the list.
Strictly speaking, by the definition of "would anyone call this object a vehicle", every single thing on the list is a vehicle, because apparently at least ~2% of the quiz respondents said they were vehicles - including kites!
In general, no testing. Unless some people are being jackasses and doing something absurd like standing on wheelchairs jousting with long sticks holding up everyone in line.
While it might be uncommon to call a wheelchair a vehicle, it fits the literal definition. I don’t understand the ‘extension of the person’ rationale, you’re still using the word ‘wheelchair’, and it’s obviously a separate object from a person. How would that rationale differ if you were talking about cars? Can I argue a car is an extension of me as long as I’m using it while I need it?
I wouldn't say I'm entirely convinced, but it's at least convincing enough that I said that a wheelchair did not violate the "vehicle" rule. I can't define "vehicle" in a way that would satisfactorily justify that decision, but I'm comfortable with that.
A bicycle actually goes on roads, follow rules and get a ticket for jumping a red light.
You can take roller skates off, get out of a wheelchair, and get off a bicycle.
Imagine you were wearing roller skates being pulled by a dog.
Imagine you were sitting in a chair, with a roller skate bound to each leg of the chair, rolling down a hill.
Imagine you were a flea in a roller skate rolling down a hill.
Imagine you were a dog in a wheelchair rolling down a hill.
Imagine you were a flea on a dog in a chair with roller skates on its legs rolling down a hill.
I don't think that's particularly clear and I think a non-negligible number of people would disagree
a thing used for transporting people or goods
On this basis, I conclude that wheelchairs, roller skates and carried skatebords are vehicles, and horses are not (as thing implies non-sentience).
Or if it was motorised?
It might include a powered mobility scooter.
Drones and balloons I would say are in the park, whereas aircraft (at normal altitudes) I would say are not. Unfortunately: I'd like more parks to have a protected square inch of silence.