Been seeing those in Shanghai for a while now. We also have a few BMW police bikes but have not seen them in person. I did once see the Shanghai fire department's "Fire" BMW, which consisted of a motorcycle fitted with a fire extinguisher tank and a large hose. Wish I'd taken a picture. Others may have seen it at the BMW shop. I had assumed it was just for show, but it was being driven by a very serious elderly Chinese man in a uniform, with no helmet of course.