China vs. the USA

Okay, here's the Chinese part:

China tests 500 km/h super high-speed train A train that goes 500 kilometers per hour. In the meantime, we, here in the USA aren't even working on such technology, I don't think. If we are, I'm certainly not aware of it. Some company may be working on some superspeed train but they aren't being tested or installed anywhere here in the States, between our cities. Here's our current train, as we know:

What is that? At least 40 year old technology, isn't it? 50? Are we the "world's leader" in much anymore? I mean, except in war and warmongering, anyway. Link to original article: http://www.reuters.com/article/2011/12/26/us-china-train-idUSTRE7BP04N20111226