Elon Musk recently posted this Twitter survey asking if we, the people, would like "super safe, Earthquake-proof tunnels under [our] cities to solve traffic." It was leading in that the "no" response was, "No, I like traffic." And it was initially vague in that it wasn't clear how these tunnels would be used. Though, most of us could probably guess. Elon later added in the thread that these road tunnels would be for zero emission vehicles only and they would be limited to EVs (from all auto companies, not just Tesla). Finally, Elon stated that these tunnels are not intended to replace other solutions, such as light rail, rather to supplement them.

At the time of writing this post, nearly 1.5 million people had responded to the survey and about 67% of them said "definitely" to Earthquake-proof tunnels. Elon's reaction: "Stop whining, subway Stalinists, the people have spoken." Notwithstanding the majority, this is a divisive topic and the reactions are mixed. City planner Brent Toderian responded by saying that this "solution" would merely result in more cars, more driving, and more emissions. Steve Jurvetson, on the other hand, argued that this would be the cheapest way to add lanes and prepare for the inevitable EV-only future. (Steve sits on Tesla's board and recently launched a venture fund that, among other things, invests in sustainable mobility.)

The crux of this divide is a view about how cities should work. And it often becomes like dogma. Is it optimal for us to all be driving around in individual vehicles -- EV or not? Will autonomous vehicles actually help solve the traffic problem? Or is building on the backbone of mass transit the only way to properly design a big and efficient city? Whether it's lip service or not, Elon seems to acknowledge that both cars and transit are important, and that both can work together to supplement each other.

What is clear to me is that cities, at the scale of say Tokyo, wouldn't function nearly as efficiently if it weren't for their extensive fixed rail networks. At the same time, there are many cities (or portions of cities) that do not have the prerequisite population and employment densities to support this same level of transit investment. And that has created a strong pull away from transit (and active transport such as cycling) toward private vehicles. Sprawling cities signal to people that they should probably be driving. This is one of the reasons why land use should never be separated from mobility discussions.

How autonomous vehicles change all of this remains to be seen. Though I do think it will make cars less private and more public transit-like. Studies show that most of us are pretty good at coming up with incremental improvements to the things we already know and understand. i.e. This is how I would make this car better. But we're far worse at coming up with and predicting tectonic shifts in the landscape. And autonomy is probably one of those shifts. But as long as our built form remains heterogeneous, I am inclined to believe that a mixture of mobility solutions will be needed. Maybe that means car tunnels. Or maybe it doesn't.

Photo by Ricardo Gomez Angel on Unsplash

Bloomberg recently came up with a new index to define the distribution of wealth across adults in the world. They're calling it your "net worth number" and the scale ranges from -2 to 11. Sadly, because the gap is so significant between the rich and the poor, it is based on a logarithmic or non-linear scale. Here's how they break it down:

Logarithms of negative numbers aren't a thing, and so, technically, if your liabilities exceed your assets (i.e. you have a negative net worth) you shouldn't appear on this index. But Bloomberg has added those people -- which could be students with debt, after all -- into the -2 category of their scale. These are people with a penny to their name.

Now, the number of adults in each bracket is purely an estimate. If you look at different sources, you will end up with different numbers. Bloomberg believes that there are 2,800 adult billionaires in the world (numbers 9 to 11); whereas Credit Suisse's estimate is about 1,600. (I wonder if it's easier to estimate the number of billionaires or the number of -2's.)

Still, it is eye-opening to see where most adults sit (at number 3) and how bottom heavy this index is.

This week Elon Musk’s Boring Company ran a Tesla through its 1.14 mile-long test tunnel in Hawthorne, California. This was accomplished by using a set of tracking wheels that Elon said, “turns a car into a rail-guided train & back again.” Apparently it is safe up to 150 miles per hour. Here is a video from yesterday’s unveiling (click here if you can’t see it below):

[youtube https://www.youtube.com/watch?v=WQn-D-i5lyM&w=560&h=315]

Some, or perhaps many, are skeptical of how this could work at scale in a dense urban environment. The company is imagining a world where every house or office building has one of these lifts (shown in the video) in their garage or basement. But there’s no question it is very cool and apparently this test tunnel only cost about $10 million per mile to dig. That’s progress in and of itself.