The materialized a few months ago with sleek concept photos and incredible stats on an electric semi truck apparently coming soon. Twelve hundred miles of range! Zero emissions! Cheaper than diesel! And today, even more. Now the company says it will put 50 hydrogen stations in North America by 2020. Oh yeah, the truck is powered by hydrogen now.

Until today, we’d been told that the Nikola One would be propelled by six electric motors (one per wheel) powered by a 320 kWh battery recharged by a turbine engine running off natural gas. Today, the company announced that turbine would actually powered a hydrogen fuel cell, working with regenerative braking to charge the batteries.

We’re still a few months from our first promised glimpse at a “real” prototype, but the company claims it’s already enticed millions of dollars in pre-orders, which it’s “$2.3 billion worth of vehicles,” out of potential drivers. After making a deposit, Nikola says operators will be able to lease the vehicle for $5,000 to $7,000 a month (depending on options) which includes unlimited hydrogen fuel, mileage and maintenance.

Here’s a chart that explains everything, sort of:

And here’s Nikola CEO Trevor Milton’s on how the company will get hydrogen into their trucks:

“Nikola will produce hydrogen via zero emission solar farms built by Nikola Motor Company. These solar farms will produce over 100 megawatts each and will use electrolysis to create hydrogen from water. Even our manufacturing facilities will be run off of zero emission hydrogen energy.”

And the zinger:

“Nikola plans to have a nationwide network of over 50 hydrogen stations for customers to begin fueling by 2020.”

I’m no engineer, environmental or architectural, but building a fueling infrastructure of that magnitude from scratch sounds like a tall order for a 40 month timeline.

It’s not the first time the startup has made potentially game-changing yet unsubstantiated moonshot claims. This electric big rig, called the Nikola One, is supposed to do pretty much everything today’s diesel-powered semis can with no engines or emissions. “Half the operating cost of diesel,” advertises. But the electric drivetrain still turns energy from a 320 kWh battery into 1,000 horsepower and 2,000 lb-ft of torque, giving you plenty of pulling power. Allegedly.

You can read the rest of the hypothetical specs Nikola has listed on , but we’re still a few months from our first promised glimpse at a “real” prototype.

Meanwhile we’re supposed to see the company’s first electric-hydrogen truck prototype by December of this year. I guess the execution of that demo vehicle will give us a clue of how capable the company is of making good on their claims. In fact, we get a little preview even sooner—Nikola has also been promising to bow at the Sand Super Sports Show in California next month.

I can’t wait to hear your theories on how viable this “electrolysis” process is, commercially or scientifically. Based on what we know so far, which is very little, I’m still staunchly pessimistic about this project. But I won’t deny I’m fascinated by it.