The McMurtry Spéirling has been setting speed records for years now, though customers have spent that time waiting, as the car has been continually refined ahead of deliveries. Now, it seems, the new auto might finally go into production as soon as this summer.

The Spéirling was first shown at Goodwood in 2021, where, the following year, it set the record for fastest hillclimb, going up the famous 1.17-mile hill in 39.08 seconds. That beat a time set 23 years prior by a McLaren Formula 1 car. The Spéirling did this in an all-electric package that emphasized lightness, power, and aerodynamics, including the use of fans to move air and increase grip.

It generates so much grip that last year McMurtry’s cofounder Thomas Yates drove the car upside down for five seconds, the kind of feat that Formula 1 cars have been theoretically mooted to be able to do in the past because of exceptional downforce but have never actually done. That’s in part because it would take a special track, but also because fluids in an F1 car aren’t designed to be used upside down. The Spéirling, being all-electric, doesn’t have the same set of concerns.

The records and the upside-down driving were impressive, though competitors wondered if McMurtry would deliver customer cars in the end, and, on Monday, the marque said it was starting production this year, with the first customer car delivered this year.

The road-going version of the Spéirling starts at 995,000 British pounds, or around $1.4 million. McMurtry says it has several buyers lined up, and even plans to expand the model range.

“McMurtry Technology currently has a number of high-profile clients and is already generating revenues in 7 figures, highlighting the worldwide requirement for McMurtry’s technology,” the company said in a release.

The Spéirling can get to 60 mph in 1.4 seconds, powered by two electric motors making 1,000 horsepower in a car that weighs less than 1,000 kilograms, or less than 2,204 pounds. McMurtry is also celebrating 10 years as a comapny and opening a new factory in Britain to accommodate production.

“Every day since our inception in 2016, has been exciting and challenging,” Yates, who drives upside-down, said in the release, “but mainly exciting.”