Dear people,

I have sent some invitation messages to this group, thinking I was inviting people to the Hyperloop Central group for which I am the moderator.

My apologies for the wrong invitation and text. Of course Tunnel Technologies is a very informative group. If you would like to check the Hyperloop Central group please go to:

https://tunnelcontact.com/groups/profile/2195/hyperloop-central

Please kindly join also the Hyperloop Central.

Sorry for this mistake. I am trying to get used to TunnelContact.com..

Cheers