FROM BMW, a plug-in X5 hybrid. “Taking into consideration the considerable extra heft and the expected higher cost, drivers of all stripes—eco-minded, performance-minded, and everyone in between—might conclude that they’re better off with a nonhybrid gasoline or diesel X5. But as we know, it’s government regulations that are providing the impetus behind automakers’ rush to plug-ins, not consumer demand—at least not yet.”