Via HuffPo:

China may have found an environmentally friendly way to save money while easing congestion on city roads, Engadget reports. Instead of spending millions to widen roads, the Shenzhen Huashi Future Parking Equipment company is developing a “3D Express Coach” (also called a “three-dimensional fast bus”) that will allow cars less than 2 meters high to travel underneath the upper level carrying passengers.

The first 115 miles of track will start being laid in Beijing’s Mentougou district at the end of this year.