jerryc41 Loc: Catskill Mts of NY

Strange new way to make a tunnel faster. You can fast forward through parts of the video, but be sure to see the end. Read the brief article, too.

http://inhabitat.com/crazy-zipper-truck-snaps-lego-like-bricks-together-to-build-a-14-mile-tunnel-in-24-hours/

lorenww Loc: St. Petersburg

The only problem I see, is that it only makes surface tunnels.

jerryc41 Loc: Catskill Mts of NY

That seems like a contradiction in terms, doesn't it. It's the old cut and cover technique.

gleneric Loc: Calgary, Alberta

Very interesting Jerry. I particularly like the part about 4 minutes in where the guy on the right points with his hand and says "why don't you drive it up to around here and see what happens" ... the confidence in the construction technique just oozes out of it! :)

In all seriousness, as a traffic engineer, this would make for some really quick construction ... interchanges, etc. ... if only the traffic would be able to drive through it at more than maybe 1 km/h (sorry, 0.62 mph :) ) Sorry, back to being serious: would be great for things like pedestrian/cycling tunnels but you would have to run power through it for lighting, and put a floor in it.

John_F Loc: Minneapolis, MN

Tunnels for things like subways have virtually never been deeper than necessary including the depth needed for a strong enough roof.

bgl Loc: Brooklyn,New York

Sure hope that this is something that Hamas cannot use!