It's moving very slowly, being driven out the doors of the also-futuristic McLaren Technology Centre HQ in Woking, England, by senior designer Alex Alexiev, who apparently supplied the video to the McLaren dealership in Newport Beach, Calif.
You can hear the engine at high idle. You can see Alexiev in the center seat, the front aero wheel covers remaining stationary, and the taper of that long, long tail as the car heads off into the English countryside.
There's not much more to it than that. But the chance to see the Speedtail in motion for the first time, even if it's a 250 mph car going just 2 mph, whets the appetite for seeing a whole lot more.