Many commenters seems to cling to the fact that this doesn't make sense. Yes ,in current form it won't be profitable at all but I think that this is only test a

Many commenters seems to cling to the fact that this doesn't make sense. Yes ,in current form it won't be profitable at all but I think that this is only test and true value of this kind of transport system reveals itself if one takes into consideration connected network of tunnels. I guess that there are also other factors - for certain locations it could be more difficult (or just impossible) to build road, tunnel is good alternative in this case.