The T-Bone House, designed by COAST, is located near the German town of Waiblingen. It has all those earth-friendly features, like geothermal heating and a rain water recycling system. It also has great views of the surrounding countryside. So, if it’s so environmental, why does the home have a glass garage that draws the focus to an antiquated form of energy consumption? Because the car in that particular garage is a 1974 Porsche Targa, the homeowner’s pride and joy. Via.