it's a stair climbing wheelchair (skip the 1st minute, as always, zero editting from the video maker)

Scalevo is like a hybrid of a wheelchair and a Segway. It’s a two-wheeled wheelchair that has the ability to climb stairs.

It has the ability features to ascend and descend stairs with a slope between 17 to 34 degrees. To execute this, it drops two treaded tracks and climbs backwards up the stairs,

http://www.iflscience.com/technology/students-help-create-stair-climbing-wheelchair