Opinions expressed by Entrepreneur contributors are their own. Amazon Fire Phone, Google Glass, New Coke and Nintendo’s Virtual Boy: What do all these products have in common? They didn’t sell.

The last time we heard from the UK's AltoVolo, it only had renders of its grand vision for a sportscar equivalent of an eVTOL ...

The only constant is change, as they say, and that’s as true in the automotive world as anywhere else. Now, it’s the Porsche Boxster’s turn to move with the times, as the popular convertible will soon ...

The answer to these questions in order is no, kind of, and yes. The Lucid Gravity is the startup automaker’s upcoming crossover SUV, but in many ways it redefines the genre in terms of packaging, ...

Tesla is nearing the production of the refreshed Model 3, known internally as "Project Highland." Prototypes of the new models have been buzzing around for some time, but none was as intriguing as ...

Phase 1 included tethered flights, ground taxi testing and high-powered ground runs, all with a pilot on board. Vertical is now preparing to progress to piloted untethered thrustborne testing, as soon ...

A full-scale mock-up of Blue Origin's Blue Moon Mark 2 crew lander has arrived at NASA's Johnson Space Center to support ...

Radian Aerospace’s subscale prototype for its Radian One space plane sits on a runway in the United Arab Emirates. (Radian Aerospace Photo) Seattle-based Radian Aerospace has finished the first round ...

A prototype is an early, trial version of a product/service made to test and improve ideas before the final version is created. Prototype is a preliminary, often incomplete, version of a product, ...