Tesla and SpaceX founder Elon Musk has a pretty good sense of humor, but sometimes we can't tell when he's just joking or mulling his next big idea. 

For example, on Saturday Musk took to Twitter to say out loud what every traffic-plagued Los Angeles resident is silently screaming inside: The city is a gridlocked hellscape.  

"Traffic is driving me nuts," wrote Musk.

But he didn't stop there. He also raised the idea of boring through obstacles to alleviate traffic woes. — mashable.com

SolarCity's solar panels with Tesla's electric vehicles and stationary storage batteries was "what the world needs, the ultimate solution" to a sustainable-energy future.

"As a combined automotive and power storage and power generation company, the potential is there for Tesla to be a trillion-dollar market cap company," [Musk] added. [...]

Musk said costs for both companies would go down significantly after the merger, but he did not give specifics. — reuters.com

On March 31, [Elon Musk's] Tesla Motors unveiled its long-promised Model 3, a $35,000 electric car that will go 215 miles per charge. The market response suggests to some the potential as a category killer, not just in electric vehicles, but mainstream cars in general: in the week since, more than 325,000 Model 3s have been pre-ordered by people putting down $1,000 per reservation, the company said April 7.

Even deep Tesla skeptics call this demand unprecedented. — qz.com

[MIT's] team was awarded the top prize, and...Delft University of Technology from the Netherlands were the next runners-up. [...]

Musk took questions from the audience on everything from what inspired him to create the Hyperloop idea (being stuck in LA traffic), what advice he had for the winning teams (lots of dry runs), and what "crazy idea" he is working on next (electric jets — Musk says he thinks he's close to something, but said precious little about how they'd work). — theverge.com

[Hyperloop] has the swagger of Elon Musk rather than the stigma of a public bureaucracy. Second, it’s going to be, like, a billion times faster than HSR. [...]

And yet, this combination of enthusiasm and magnetism doesn’t buy farmland. It doesn’t ease eminent domain takings. It doesn’t blast through bedrock or relocate utilities. It doesn’t design station area plans. [...]

The very same mountains, cities, canals, farmers, and habitats that complicate HSR also complicate Hyperloop. — cp-dr.com

"Robots hate litter," reads a health and safety sign. "Please don't give them any more reasons to overthrow mankind." It's also fair to say that naming your robots makes the whole process of constructing cars vaguely ridiculous. "Wolverine and Iceman lift the cars to tramline two," our tour guide informs us with the zeal of a true believer, adding, as he did after virtually every sentence, that this is 'kind of amazing'. — wired.co.uk

Elon Musk has plenty of other ideas. If anyone asks and he has a moment to explain, he'll talk distractedly of as-­yet-­unrealized concepts—a vertical takeoff­-and­-landing supersonic electric jet for long­-distance travel; an entirely new form of transport that he's named the Hyperloop... He is a man with the rare problem of having more ideas for how to radically change our world than the time to realize them.

Still, you do what you can. And so this Monday evening, his mind is on space suits. — GQ

Musk had warned me that the scale of the place would be overwhelming. "It will blow your mind. You see it in person and then realize, Fuck, this is big."

He was right. It was impossible not to feel awestruck by the sprawling, 71-foot-tall structure stretched out, miragelike, before me as I drove into a shallow canyon. [...] When the Gigafactory is finished, it will be only slightly smaller than Boeing’s Everett, Washington, plant, which is the world’s largest building by volume. — fastcompany.com

Using cruise control, you can set the [Tesla] to a particular speed and it will accelerate and turn within a lane in a straight line. It will dodge cars attempting to swerve into your lane, objects that it can see, pedestrians or fellow drivers simply trying to swerve into you because you’re an obnoxious prick with a Tesla blasting Party Rock Anthem.

[...]

It can’t, however, direct you along every street... — The Guardian

even given that the Hyperloop whitepaper was a rough sketch, the most important elements of the plan—its speed and price—have been vastly oversold. [...]

But there’s a final reason to be skeptical, not just of the technical details of the Hyperloop, but of the supposedly utopian motives behind it: It may not even be Musk’s idea. — fortune.com