500 millions It's the number of the most popular bicycle model in China...add many, many millions of other bicycles there, another millions of bicycles in many other poor countries around the world...US market is tiny comparing to the rest of the world. Having a bicycle in a third world country is like having Mercedes S class in USA...big deal my friend. Very few people ride for pleasure there...
On the other hand...many "rich" American road cyclist are idiots for not buying $20 rear light, and even bigger idiots for explaining that the weight is the reason why they dont use rear lights...
I'm always sorry for families of killed cyclists, but in most cases the reason for accidents is running red light, stop sign and not having rear and/or front light. Suicidal cyclists...