They may not be the fastest vehicles on the planet, nor born on the drag strip, but the Rolls-Royce Wraith and Lamborghini Urus did get together to prove what they’re made of in a straight-line acceleration test.

Performed by Hennessey at the Pennzoil Proving Grounds, the grand tourer and the super SUV were subjected to a quarter mile sprint test, from a standing and a rolling start, to better highlight the differences between them.

Here’s a thing, though: unlike the Wraith, the Urus is not stock. It’s equipped with Hennessey’s HPE750 performance package, which has liberated 750 horsepower from the twin-turbocharged 4.0-liter V8 thanks to new internals and an ECU remap, dropping the 0-60 mph (0-96 km/h) time to 2.65 seconds.

Compared to the stock Italian super SUV, which has 641 HP and 627 lb-ft (850 Nm) and does the 0-60 mph (0-96 km/h) in 3.5 seconds, with a 190 mph (305 km/h) top speed, it’s significantly faster. And to ensure that no one mistakes it for a plain Jane Urus, it features custom ‘Hennessey’ and ‘HPE750’ emblems, and two serial numbered plaques, one on the dash and one on the engine.

The Wraith is over 500 lbs (230 kg) heavier than the Urus, but we wouldn’t call it a slouch, considering that its 6.6-liter twin-turbocharged V12 produces 624 HP and 605 lb-ft (820 Nm) of torque. From rest to 60 mph (96 km/h), the British ultra-luxury coupe takes only 4.5 seconds, and top speed is limited at 155 mph (250 km/h).

It seems then that the Urus has a clear advantage on paper, especially with the Hennessey tune installed, but how does this actually translate on the drag strip?