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Bicycle Bob · 05-17-2009, 12:14 PM

A tube does not have to be buried to be evacuated. It could even be clear. However, even long, dedicated holes like the Chunnel have never traded the fuss for the savings.

05-17-2009, 12:14 PM	#26 (permalink)
Bicycle Bob EcoModding Apprentice Join Date: May 2008 Location: N. Saskatchewan, CA Posts: 1,805 Appliance White - '93 Geo Metro 4-Dr. Auto Last 3: 42.35 mpg (US) Stealth RV - '91 Chevy Sprint Base Thanks: 91 Thanked 459 Times in 327 Posts	A tube does not have to be buried to be evacuated. It could even be clear. However, even long, dedicated holes like the Chunnel have never traded the fuss for the savings.