I just discovered that Tencent (QQ) maps have a streetview function just like Google Maps does in western countries. They don't have every street in China, but they have every street in most cities, as well as several country roads, including several in Tibet, which is pretty fun. You can follow the highway all the way from Kunming to Lhasa using this.

Just go to map.qq.com/ then click 街景 and drop the cursor wherever it is you want to see

Baidu also has a similar project:

www.gokunming.com/[...]

a video using these qq streetviews from Kunming to Tibet: www.youtube.com/watch?v=ZB6dUFP-JQY