Maybe Jerry would go for a high speed rail atop the wall. 1st segment, Pacific Ocean to Yuma AZ.
Funny, but most don't know that was an official referendum voted by the dumbass electorate in California. It was not a law passed by the Cali Legislature. Cali has a referendum system that appears on the ballots once enough signatures are signed on a petition.
However, once on the ballot, the big money lobbyists kick in with never ending commercials. Blue Californians will vote on anything if presented in simple terms to their little minds. "Oh goody, a bullet train from LA to SF. We can do an intra-state Rainbow Ride soon!".
Once the referendum becomes law, the Legislature can fund it any way they want. And that's why the "train to nowhere" keeps doubling in cost and time, not to mention buying private property and the countless eminent domain lawsuits.
If blue Californians had any sense, they would have petitioned for a high-speed train to Las Vegas. The track is already there along with State owned property/easements for additional track and depots. Think of the jobs and tax revenue for the counties it crosses. The arrogance and stupidity of Cali voters/officials is just.......no words.
You want to know about this boondoggle?: https://www.cnbc.com/2018/03/12/californias-77-billion-high-speed-rail-project-is-in-trouble.html
Correct me if I'm wrong here, Jim.