The 2009 Frankfurt Auto Show won’t start until September 17, but Korea’s Hyundai Motor Company is already establishing itself as the company with perhaps the boldest vision for a green car future. Vehicles with Hyundai and Kia badges on display in Frankfurt will include hybrid city cars, a hybrid crossover SUV concept, an all-electric city car, a plug-in hybrid, diesel vehicles with micro-hybrid stop-start technology, and mid-size lithium-battery-powered sedans running on liquid petroleum gas.