Opel/Vauxhall is bringing the Flextreme GT/E concept car to Geneva this year. It’s like the Volt, only faster and better looking. The car can cruise at 125 miles per hour while achieving 175 miles per gallon. Like the Volt, it’s powered by electric motors and batteries, with an internal-combustion engine that drives a generator for extended-range. The Flextreme uses slide-out panels that deflect air around its rear to achieve a staggering .22 drag coefficient. I like the way it looks, but at the pace the auto industry moves, we won’t see a design like this hit the market for, say, 50 years.