<a href="http://www.youtube.com/v/t1gTzc7-IbQ" target="_blank">http://www.youtube.com/v/t1gTzc7-IbQ</a>

Imagine one day you driving on road, then one huge "moving tunnel" flying overhead, carring with hundreds of people, you may think it is dream, but it is true, soon this incredible Straddling Bus(3D Bus) will appear on streets, this bus step across two lanes with hollow lower part, so cars can pass through, compared with Metro, Straddling Bus has lower cost,shorter construction period and almost same passenger capacity, it's more economical way of future urban traffic. from this video, you will see how it works, you will be shocked by this innovative way of transportation.