Here are two questions to ask when presented with a hot new tech stock with designs to solve the world's problems. First, is this technology really going to be the answer? Second, is this company going to be the one to provide the technology? When it comes to electric cars, investors better hope we're grading on a curve.

Buck Hartzell has no position in any stocks mentioned. The Motley Fool recommends Tesla Motors. The Motley Fool owns shares of Tesla Motors. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.