For me, the more exciting phenomenon is the electric 3 wheeler, AKA the electric auto-rikshaw/tuk-tuk.
Hired 3 wheelers are the primary affordable last-mile option in cities big and small in Asia when you don't have or can't drive a car or 2-wheeler (school children, the elderly, or anyone who doesn't want to deal with the insane traffic). They tend to have 2-stroke engines, a huge source of local air pollution.
But there are increasingly electric versions these days. I asked one e-rickshaw driver whether he saves money by driving it, and he said yes, but also it's a lot more comfortable for both him and his customers vs the vibrations of the 2 stroke petrol engine.
His only concern was the depreciation and it's effect on resale value.
> They tend to have 2-stroke engines
Where in Asia are 2-stroke engines for still common?