I have no problems travelling on the tube ( subway) but I definitely wouldn't want to travel underground for a long distance in a car because there would be hundreds of cars travelling at the same time doubtless head to tail... . Imagine if a couple of miles in, someone broke down in front of you ...jeez claustrophobia would set in super quickly!!
What about that tunnel under the English Channel? Is it called a Chunnel? How is that? What a great piece of engineering that was.
tunnels in earthquake territory don't sound like a good idea to me but what do I know.
I have no problems travelling on the tube ( subway) but I definitely wouldn't want to travel underground for a long distance in a car because there would be hundreds of cars travelling at the same time doubtless head to tail... . Imagine if a couple of miles in, someone broke down in front of you ...jeez claustrophobia would set in super quickly!!