Horacio Pagani wasn't the only former Lamborghini engineer who went off to start his own supercar company. Before him there was Claudio Zampolli who in the late 1980s started Cizeta in Italy. The ...

Opinions expressed by Entrepreneur contributors are their own. Working on a new product is always an exciting and risky process, even when you have all the data suggesting that the product is a win.

All great ideas start with a single prototype, whether it is the iMac, the Tesla Roadster, or a mobile app you believe has the ability to change the world. As the co-founder and COO of a mobile and ...