And we think it's a Model Y, but who knows?

Tesla has offered a very brief look at a new model, as part of a tightly-produced promo video dubbed 'Tesla 2018'.

Along with footage of the Model 3 driving through a warehouse and some shots from the production line, the video shows an unfinished car partially obscured by a sheet.

Given it has a faintly chunky crossover-ish stance about it, speculation has started swirling that it's the Model Y we've been promised.

Teased last year, and then mentioned again the Tesla first-quarter earnings call, we know very little about the mid-sized SUV promised by Elon Musk.

It'll be built on the same platform as the Model 3, that much is clear, but Musk has said the car won't be manufactured in Fremont – and that he hasn't decided where it will be assembled.

Aside from the shadowy pre-production shot of our as-yet unrevealed car, the video provides a sneak peek at the Roadster. Tesla loves a good acceleration video, and this clip shows terrified passengers screaming as the driver unleashes all 10,000Nm of wheel torque off the line.

At launch, Elon Musk claimed the car will hit 100km/h in just 1.9 seconds, on its way to a top speed north of 400km/h. Sounds exciting, but there's a lot of water to flow under the bridge before it makes production.

Check out the video atop our story for a peek, and let us know what you think it is in the comments.