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It doesn't look good if you have to build extensive tunnels or viaducts and pour millions of cubic meters of concrete (with all their attendant CO2 costs). If you strictly want to go for the environmental benefits then you'll want to build higher-speed conventional rail (200-230?). Unless you have a country that's completely flat and empty. The air traffic CO2 problem will resolve itself by curtailment.

Schengen is toast!
by epochepoque on Tue Jul 19th, 2011 at 04:39:30 PM EST
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