Porsche uncovered the 918 Spyder concept at the Geneva Auto Show

Porsche uncovered the 918 Spyder concept at the Geneva Auto Show last week, the automaker undoubtedly bear hopes of a positive response, leading to a potential production car. And that's exactly what seems to have happened."Frankly, we were pleased that we were able to keep it quiet, and a lot went into that," said Dave Engelman, a Porsche spokesman.Mr. Engelman posted that his boss, Bernd