Fire up the electric wonder that is the McMurtry Speirling and your world truly can go topsy-turvy. This video is insane!

HOW remarkable is the McMurtry Spéirling?

Rhetorical question if ever there was one. This pint-sized 745kW single-seat electric car is an incredible thing … that has just become even more so.

The car that uses fans mounted underneath to suck air from beneath the chassis, thus developing more downforce than the car weighs, made global headlines when it obliterated the record of the hillclimb run annually at the famous Goodwood venue in the United Kingdom.

It then went faster than a V10 Formula One car around the Top Gear test track.

And now? the most remarkable accomplishment of all. It can drive upside down.

Not a word of a lie. The The McMurtry's incredible active downforce system can generate enough suction that it really can drive on the roof.

To prove that it could be done, the co-founder and managing director of McMurtry Automotive, Thomas Yates, took the Spéirling onto a special rig which could rotate through 180 degrees, dangling the stationary Spéirling upside down as it clung on using only the downforce its fans could generate.

This is incredible. As many know, racing cars use aerodynamic surfaces to generate downforce to point that, in theory, they could drive upside down. The complication is that they have to be moving fast enough first. Which is really fast.

The McMurtry's 'Downforce On Demand' system sidesteps the physics of all that, generating a sufficient vacuum underneath the hypercar's floor to hold it upside down, exceeding the force of gravity. Once the rig was fully inverted, Yates drove forward, entirely unsupported, except by the invisible laws of physics.

So what was that like? “Just a fantastic day in the office!” Yates said.

“Strapping in and driving inverted was a completely surreal experience.

The 2000kg of downforce that the fan system can generate is truly astonishing to experience.”

“This demonstration was an exciting proof of concept using a small purpose-built rig, but is perhaps just the beginning of what's possible. With a longer inverted track or a suitable tunnel, we may be able to drive even further! Huge congratulations and thanks to the entire McMurtry Automotive team, especially the engineers involved in the car and fan system's design, they are the heroes of today.”

The Spéirling's downforce allows it to do a ridiculous 0-100kmh acceleration run of just 1.5 seconds, and it can do a 1/4 mile run - the traditional drag racing distance - in just eight seconds. On a race track, it can corner at up to three times the force of gravity.

McMurtry has plans to deliver the first customer versions of the Speriling Pure trackday car next year. There are tentative plans for a potential road-going version, too.

The car was developed by Sir David McMurtry, a businessman with roots in Dublin, hence the Spéirling's name - it’s Irish for ‘lightning’. Sadly, Sir David passed away last December.