Porsche certainly caught our attention, and that of its millions of fans around the world, when it revealed the new 935 during its Rennsport Reunion at Laguna Seca last week. A purpose-built track machine with styling evocative of a veritable legend will do that for ya.

But a set of wheels like this isn't made to sit still. It's made to hammer around the track, flat out, using every curb and inch of tarmac at its disposal. And that's just what it's doing in this video, captured while the new Moby Dick (as the original was named by fans) was testing at Monza.

The prototype caught here is all blacked out, without the throwback livery in which it appeared at the Rennsport Reunion. And it looks even more sinister without it. But more to the point is how it sounds, and we'll let you experience the aural sensation for yourself.

Suffice it to say it's a rather maniacal rasp, especially considering the engine's forced induction. The reborn 935 is based on the latest 911 GT2 RS, and the 3.8-liter twin-turbo flat-six carries all 690 horsepower along with it. But the track machine is a good hundred kilos lighter.

Combine that with the stiffer suspension, more radical aero, and other track-specific equipment, and the 935 promises to be one heck of a ride. It's Porsche's take, in short, on the same formula that's transformed LaFerrari into the FXX-K or the McLaren P1 into the GTR: a track toy for wealthy gentleman racers, unbound by any road or race regulations.

Unfortunately the German manufacturer will only make 77 of them, each commanding a princely sum of €701,948 (plus tax), or about $800k at current exchange rates. And you can bet they'll all be snapped rather quick– if they haven't been already.