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Although the mention of a magnetically levitating train outside of US borders won't grab too much attention, saying that phrase here most definitely perks up ears.

TOKYO (AFP) - - A Japanese rail operator said Wednesday it plans to introduce the world's fastest train in the next two decades, a next-generation maglev built at a cost of 45 billion dollars.

The implementation of new high-speed transport technologies re-shapes the demand balance between transport modes and rebound effects may occur. In this paper first a definition of environmental rebound effects of high-speed transport is presented and various cases are discussed. Second, a method is developed to determine and quantify the environmental rebound effects employing life cycle assessment. The method is illustrated in a case study by investigating the greenhouse gas emissions of a frequently discussed future underground maglev train system for Switzerland.