By the same logic, wouldn't rollerblades also not carry people (and by extension, not be vehicles)? Rollerblades, skis, snowboards, skateboards, scooters, bike

By the same logic, wouldn't rollerblades also not carry people (and by extension, not be vehicles)? Rollerblades, skis, snowboards, skateboards, scooters, bikes. IMO the definition of a vehicle comes down to how wieldy, how large, and how powerful the device is - for instance car is obviously a vehicle as it's very powerful, has a large turning radius, and large area. The interesting thing about this is that there's an argument that scooters are not vehicles but skateboards are - scooters are far easier to control (i.e. more wieldy) whereas skateboards have a tendency to launch the user in one direction and the skateboard in the other, which makes it rather unwieldy.