Funny how these are so crazy popular here and in Europe, whereas on my recent trip to Washington and Virginia, I didn't see even one. Also, on my last check, the new generation of electric bicycles hadn't yet reached India - apparently not even in Auroville, which once led the way with electric vehicles.
Despite appearances, the technological map is still very uneven. What's popular in one place is relatively unknown in another. I first noticed this a few years ago. Five years ago in Delhi, huge capacity usb thumb drives were available - it's true that they used some sort of compression technology that depended on MS windows. But I hadn't seen these anywhere else.