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.

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, ...

Regent Craft received U.S. Coast Guard approval to test its Viceroy seaglider prototype. The 12-passenger seaglider is designed for 180-mile flights at 180 mph, combining aircraft speed with boat ...

Renowned eVTOL company Joby Aviation is moving toward production prototype development and striving for flight certification for its new flying vehicles after achieving a milestone in its testing. The ...