Thank god Shanghaiist can bring some context to the following photo which has been circulating the internet the last week. They point to the Xinhua’s photospread which has appropriate captions:

Members of China’s armed police demonstrate a rapid deployment during an anti-terrorist drill held in Jinan, capital of east China’s Shandong Province July 2, 2008, roughly one month ahead of the Beijing Olympics.

Yes, it’s a publicity stunt done by the police for a PR drill in light of the upcoming olympics. Note that the Segway devices are capable of 13 mph out of the gate, and ones used for anti-terrorist deployment are probably modified for a higher speed. 20mph is something that humans can’t sustain with all their gear for very long, so using Segways might not be such a bad idea!