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"...digging sure sounds easier than building a rocket that lands vertically." It isn't. Just ask the builders of the Chunnel. It's only 31 miles long and went

"...digging sure sounds easier than building a rocket that lands vertically." It isn't. Just ask the builders of the Chunnel. It's only 31 miles long and went 80% over budget and 20% behind schedule. A tunnel from New York to DC would be nearly 10 times as long and run under some of the most densely populated land in the country. Rockets and electric cars are trivial by comparison.

nickik 9y ago
20% behind schedule? 80% over budget? Look at some of the projects by SpaceX.
- vannevar 9y ago
  Or look at the Big Dig in Boston. It ended up costing $24B (10 times the original estimate) and was eight years behind schedule. And that was for less than 4 miles of tunnel under a major city.