The Martin Jetpack was a single-person aircraft under development. Despite its name, it did not use a jet pack as such, but ducted fans for lift. Martin Aircraft Company of New Zealand (not related to Glenn L. Martin Company, the US company also known as Martin Aircraft) developed it, and they unveiled it at the Experimental Aircraft Association’s 2008 AirVenture in Oshkosh, Wisconsin, US. The US Federal Aviation Administration classified it as an experimental ultralight airplane.
It used a gasoline (petrol) engine with two ducted fans to provide lift. It was specified to have a maximum speed of 40 km/h (25 mph), a flight ceiling of 2,500 ft (760 m), a range of 15–20 km (9.5–12.5 mi) and endurance of about 28 minutes flight. Empty weight was 200 kg (440 lb). Martin Aircraft initially planned to target first responders as customers. In 2019, the company closed. (Wikipedia)
Two of version 12 prototypes are up for auction on Trade Me