#vehicle engineering
- Flying car — A hybrid experimental or conceptual vehicle designed to operate both as an automobile on public roads and as an aircraft on airways, utilizing foldable or retractable wings and a mixed propulsion system. This advanced technological concept aims to relieve terrestrial traffic congestion by integrating daily commuting into controlled airspace.
- Sidecar — A secondary lateral device or vehicle, with a single wheel, designed to be mechanically attached to the side of a motorcycle, intended to carry an additional passenger or goods. In an administrative or technical sense, it represents an added piece, an annexed document, or a structural accessory mounted on a machine to expand its primary functionality.