A light rail train that drives around cars

[2010-08-05] traffic, scitech
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Source: ChinaHush
Cool idea: China is working on a light rail train that has a hole inside so that cars can drive through it. That means that it can use the same roads as cars, without occupying additional space. And even while it stops, cars can continue to drive. Compared to a subway system, routes are much cheaper (10%) and quicker (1 year versus 3 years or more for 40km) to build. But how is this better than a single-lane light rail train (in Munich, some of them share a road with cars)? No tracks in the road? I’m sure that could be fixed by using non-track wheels and some sort of automatic guidance.
[Source: Huffington Post]