SAN FRANCISCO—Newsflash: the new electric Cadillac Escalade IQ weighs over 9,000 lbs, or a fair amount more than 4,000 kilograms. For context, that figure works out to almost exactly half again as much as the 682 hp (509 kW) Escalade V that comes equipped with a barking-mad 6.2 L supercharged V8. Yet the latest and supposedly greatest from Cadillac needed to weigh so very much to achieve a class-leading range target of 460 miles (740 km), thanks to a 205 kWh battery pack.

The Escalade IQ shares a modular General Motors (formerly Ultium) chassis and battery pack with the gargantuan Hummer EV, and even more hardware with the Silverado and Sierra pickup truck siblings. As opposed to trying to attract rugged work truck and off-roading cred, though, for Cadillac that kind of range figure seemed necessary to appeal to a “no compromise” lifestyle that Escalade buyers might well expect while considering a switch to fully electric power.

And the new IQ certainly puts down plenty of instantaneously available grunt, and despite its mass can punch out a 0–60 time under five seconds with the Velocity Max button pushed, thanks to dual motors rated at 750 hp (560 kW) and 786 lb-ft (1,065 Nm).

Three rows of seats will comfortably seat seven adults, and a forthcoming EQL variant stretches just over 4 inches longer with a higher roofline to create even more space in the third row. The rest of the interior, meanwhile, packs in all the tech possible: almost six feet of screens atop the dash, up to 42 speakers’ worth of surround sound, optional Executive second-row seats with massaging function, hands-free Super Cruise partially automated driving, and the list goes on.

We know by now that electrification fits well into the super-luxe ethos, because silent and smooth propulsion works better for shorter lifestyle drives. And yet, the sheer mass required to achieve those range and power figures—despite improved aero versus the ICE Escalade—unfortunately means that the laws of physics make no compromises, either.

Specifically, the Escalade IQ rides on the same battery cradle, same suspension components, same 24-inch wheel size, and same Michelin Primacy LTX tires as the Silverado EV RST First Edition—a behemoth of a pickup truck that many journalists panned due to the baffling decision by General Motors to spec the largest wheels ever sold on a production vehicle. Even slightly smaller 22-inch wheels, as I can attest after driving a Silverado EV LT, help to reduce the crashy and clunky reverberations that ruined any semblance of passenger serenity.