ett vehicle Archives – The Green Optimistic green tech news, since 2008 Mon, 09 Nov 2009 20:18:36 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 ETT: Intercontinental Vacuum-Based Transportation System Can Reach 4,000mph https://www.greenoptimistic.com/ett-intercontinental-vacuum-based-transportation-systemthat-can-reach-4000mph-20091109/ https://www.greenoptimistic.com/ett-intercontinental-vacuum-based-transportation-systemthat-can-reach-4000mph-20091109/#comments Mon, 09 Nov 2009 20:18:36 +0000 https://www.greenoptimistic.com/?p=5271 ETT stands for Evacuated Tube Transport, and it is a new concept of a transportation system that makes use of vacuum pumps, tubes and cabins to take people from point A to point B with only 2 percent of the energy required otherwise to power an airplane, a car or a train.

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