Feet.
Feet is not a vehicle, your reply is invalid!
1. Grammar correction: "Feet are not vehicles"
2. I disagree. Vehicles can be defined as any of the following:
QUOTE said:
A conveyance; a device for carrying or transporting substances, objects or individuals.
A medium for expression of talent or views.
A liquid content (e.g. oil) which acts as a binding and drying agent in paint. (FM 55-501).
(Hinduism) An animal or (rarely) a plant on which a Hindu deity rides or sits
An entity to achieve an end.
Naturally, only the first and last are resembling what is being talked about. The last one being fairly loose depending on interpretation.
A device for carrying or transporting substances, objects, or individuals. Because I know that this will be debated, I have also gathered the definitions for device:
QUOTE
a thing made for a particular purpose; an invention or contrivance, esp. a mechanical or electrical one.
a plan or scheme for effecting a purpose.
a crafty scheme; trick.
a particular word pattern, figure of speech, combination of word sounds, etc., used in a literary work to evoke a desired effect or arouse a desired reaction in the reader: rhetorical devices.
something elaborately or fancifully designed.
a representation or design used as a heraldic charge or as an emblem, badge, trademark, or the like.
a motto.
Archaic. devising; invention.