14 minutes ago, Liverpool Lou said:

There are none.  What about the air above the Atlantic at the moment...a good wall?

It's the reassuring distance that counts.

12 minutes ago, Liverpool Lou said:

You seriously think that would not be taken into consideration and that they need a couple of Asean Now posters to point out the snags?   Has construction not taken place on existing seismically-active areas?

Across an active spreading plate margin, no not many, but Iceland sits on that same plate margin, it's the reason the island exists, and their roads get cut off and need rerouting after major events. 

16 minutes ago, Liverpool Lou said:

You seriously think that would not be taken into consideration and that they need a couple of Asean Now posters to point out the snags?   Has construction not taken place on existing seismically-active areas?

Well what about the ocean? Thats wet and tunnels leak. Long way for the Flex Seal guy to travel with the can.

Traveling at 3,000 miles per hour? 

Atmospheric pressure beneath the bottom of the Atlantic?

So, sounds like they'd need a solid, pressurized environment.  Like the one that popped when those people went to see the remains of the Titanic?

2 hours ago, Lacessit said:

You add so much to every thread.

Especially when leaving it!

4 hours ago, PETERTHEEATER said:

What would be the 'G' forces on passengers during the acceleration/deceleration phases and the time of those phases?

As long as the travel is straight (no curves or gradients) then a steady increase increase in velocity would be okay. Don't forget the 'force of gravity' is downtowards the Earth's center. The slightest curve however would invoke the centripital/centrifugal/'g force'. Say 5000kim/h is about 1389m/s. a circle radius of 30km would still result in about 64g, enough to kill a human. Now that's for an aircraft and how tight a curve it could make but for a vactrain under water I don't know how that would modify the equations. Perhaps an engineer member here could work that out.

2 hours ago, Harrisfan said:

Yes because we are "idiots" and enjoy life. 

So do people who have had prefrontal lobotomies.

You have to count in the immigration lines... but why go from 1 hellhole to another?

5 hours ago, Watawattana said:

If it's Musk's Millions then I don't care.  Zero tax dollars/pounds please.

It could be funded by the gold that will soon go missing from Fort Knox...

 

At least it does demonstrate the dangers of ketamine consumption.

14 hours ago, Srikcir said:

Call it the Transamerican Tunnel and Trump will be all-in.

 

Drop the trans and just call it the American tunnel. Trans and America are incompatible.

11 hours ago, PETERTHEEATER said:

What would be the 'G' forces on passengers during the acceleration/deceleration phases and the time of those phases?

 

On the city - Shanghai airport trip there was some limited feeling of speed but nothing serious. Faster, who knows?

 

9 hours ago, Liverpool Lou said:

For the same reason that, prior to transatlantic air travel being the norm, such a project was considered desirable...to get there quickly.

Jet-lag is ganna be awful.

PLEASE this is the plot for transtlantic tunnel hurrah by Harry Harrison a brilliant author:

 

https://en.wikipedia.org/wiki/Tunnel_Through_the_Deeps

If this works out we could do something even more radical like build a high speed train from SF to LA. 

15 hours ago, Lacessit said:

It only takes one earthquake to screw it up. The mid-Atlantic ridge is seismically active.

 

Next.

 

Easy fix.

Trump will sanction the mantle, and demand 50% of its rare earf's.

11 hours ago, Jingthing said:

I wish Musk would concentrate on his tech stuff and keep his South African apartheid hands off backing Nazis, stealing personal info of all Americans to further his own far right wing social media empire. and smashing the U.S. government into smitereens. 

The Nazis are in Ukraine. Get help.

3 hours ago, Cryingdick said:

 

Drop the trans and just call it the American tunnel. Trans and America are incompatible.

Fascist Tunnel?

Straight out a 1950s scifi rag.....welcome to sh*t-topia.

On 2/26/2025 at 10:28 PM, Cryingdick said:

If this works out we could do something even more radical like build a high speed train from SF to LA. 

America has 80 km of high speed rail. SF to LA is about 600 km.

 

Perhaps you should ask the Chinese to build it for you. 48,000 km in China, they would not even break a sweat.

 

Maybe you should have put a sarcasm alert with your post.

On 2/26/2025 at 5:07 AM, Srikcir said:

Call it the Transamerican Tunnel and Trump will be all-in.

Trump might object to "Trans".

On 2/26/2025 at 7:03 AM, Mike_Hunt said:

Unaffordable 

Unobtainable

Unrealistic