Loss in terms of money or efforts. Could be recent or ancient.
The Las Vegas Loop.
(known on dictionaries as a tunnel)
And nobody have died there yet.
oh that’s not a blunder, that was intentionally a flop to prevent California from developing a high speed rail network
You may be confusing the Las Vegas Loop and the Hyperloop. Las Vegas Loop is the shitty tunnel you drive teslas single file through in Las Vegas, Hyperloop was the “vacuum tube frictionless train replacement” that was used to reduce excitement about the high speed rail proposal.