Meet Rev, the iPhone app that, for $40, effectively turns your handy-dandy Apple phone or music player whatchmacallit into an OBD-II scanner. It also uses the iPhone’s accelerometers and GPS to calculate things like fuel economy and g-force load. Hit the video above to learn more about the app, demoed partially through the experiences of Billy, a driving enthusiast with a Volkswagen Beetle. And here we thought those two things were mutually exclusive… [Source: iCars Singapore via YouTube]