CNG-driven auto-rickshaws, better known as "CNGs", are usually enclosed. They give you the idea of ensuring privacy and safety, but in reality, they seldom do so. Using a smartphone in a CNG is a bad idea.

The canvas covering of the CNG can easily be cut from the top or the side. Sometimes when people are using expensive phones in a CNG, snatchers spot them and climb atop the vehicle, cut the canvas and snatch their phones, leaving the victim dumbfounded.