Halfbakery: vehicle: tunnel http://www.halfbakery.com/view/fc=10384:s=c:d=iw:dn=100:ds=A:i=Ideas_20are_20sorted_20alphabetically_2e_3cbr_3e_0d_0a_3ccreated_3e:t=vehicle_3a_20tunnel?op=editview Ideas are sorted alphabetically.<br> <created> Halfbakery (mailto:bakesperson@gmail.com) City Arteries (-0.5) http://www.halfbakery.com/idea/City_20Arteries Hawaii Hullabaloo (0.5) http://www.halfbakery.com/idea/Hawaii_20Hullabaloo Moiré Metro Tunnels (0.5) http://www.halfbakery.com/idea/Moir_e9_20Metro_20Tunnels Quake-Proof Oceanic Tunnels (0.5) http://www.halfbakery.com/idea/Quake-Proof_20Oceanic_20Tunnels Solar Powered Tunnel Construction (-1.5) http://www.halfbakery.com/idea/Solar_20Powered_20Tunnel_20Construction Subway Protector (-0.5) http://www.halfbakery.com/idea/Subway_20Protector Trans-Atlantic Train (-0.5) http://www.halfbakery.com/idea/Trans-Atlantic_20Train Trans-Oceanic Tunnel (1.0) http://www.halfbakery.com/idea/Trans-Oceanic_20Tunnel Tunnel City (0.5) http://www.halfbakery.com/idea/Tunnel_20City under the sea glass tunnel (-0.5) http://www.halfbakery.com/idea/under_20the_20sea_20glass_20tunnel Underground City Highway System (-0.5) http://www.halfbakery.com/idea/Underground_20City_20Highway_20System Vacuum Train (0.5) http://www.halfbakery.com/idea/Vacuum_20Train Zoom! (0.0) http://www.halfbakery.com/idea/Zoom!