My bike is nothing special. Just a $60 one-speed.
I of course get passed by cars and motorcycles all the time.
The electric scooters they have an awful lot of here pass me sometimes, it depends if it's a fast one or a slow one, but I'd say I pass about 60% of them.
But, since being in China, I have NEVER been passed by another bicycle. And I intend never to let that happen.
On an unrelated note, I hope this swine flu deal back West turns out to not be as serious as the news reports make it seem now.