Oh Boy! China is really one, no even many steps ahead of India and thinking of India.
The new project that is still in its conceptual design is Huge Over Buses Will Run Over Small Cars.
This is the project by Shenzhen Huashi Future Car-Parking Equipment.The idea is to make use of the space between regular-size cars and bridges, thus saving construction costs as well as minimizing congestion impact by allowing cars to drive underneath these jumbo buses.
Really amazing thing man...
Video Here: http://www.engadget.com/2010/08/02/china-to-build-ginormous-buses-that-cars-can-drive-under-video/
P.S.: Worth Reading and Watching.