well, im not sure where this tunnel would be located BUT if he was digging under my $500,000-1,000,000 residential house (or whatever the prices there are) or my commercial property i sure as hell would sue the billionaire all the way to the bank as well. For him its just "playing games" oh let me dig a tunnel so i can skip the traffic on MY way to work. For me - its my livelihood - house is a single biggest purchase in most people's lives (or my business - if he is digging under my commercial property). If this tunnel affects my building - what do i do when things go wrong (foundation cracks)?

I have to go around and ask 10 people in my neighborhood if its ok if i want to move a freaking wall inside my house and this guy can just go and dig up tunnels without asking us ... just because he feels like it and he is a billionaire.