I always just downed a bottle of water which usually helps raise the ph level enough for me to feel better.

With such a drop required could you harness a tide to produce power. Like maybe allow the tide to fill San Francisco Bay and harness it when it recedes.

I'm guessing AMD now has some of the fastest CPUs on the market.

Also if you are doing the username/password is incorrect you should also add an artificial delay if it's the username is wrong. Because you can tell which one is wrong my seeing how long it takes the server to respond.

We probably could install the on top of cell towers.

I think you're right, it looks like it's growing as it rotates away.

This is called a salt dome. It seems this one in particular is called the "Qeshm salt dome".

http://geology.com/stories/13/salt-domes/

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

You're also probably going to need 2 tunnels these tubes are monodirectional.

Yes, my calculation is one-directional. Two directions just doubles both costs and profits (and is probably necessary to make it appealing, and for fire safety reasons).

The bigger problem is that I casually listed average vehicles per minute, but in practice you likely have barley any traffic at night and four times the average during peak hours.

Also "finance over 50 years for free" is a giant stretch. Even at a theoretical 0% interest rate the opportunity cost makes this much more expensive in reality.

This is basically one of my problems with self driving cars and putting your life in the hands of neural networks. It could theoretically be possible to find vulnerabilities in these systems. Someone could possible create some sort of genetic algorithm to evolve a sign that could cause a car to veer off the road and crash.

Maybe i'm just scare mongering or worrying about nothing. I just don't really feel comfortable putting my life in the hands of something that no one knows exactly how it works.