Acura announced a Type S variant of its new Integra last month, but the prototype was shown only in a few photos and a few laps around an oval in Japan. That changes this weekend, with that prototype ...

Yet again this year, the Rolex 24 includes two types of cars but four classes of entries. Huh? We can explain. Basically, there are 24 prototypes and 36 “street” cars of a serious sort. The two types ...

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, ...

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.