So far this year, Ford has built 27,816 Mustang Mach-Es. In the same time period, the company produced 26,089 gas-powered Mustangs.

It, perhaps, shouldn’t come as a surprise that a family SUV with the latest technology is outperforming a two-door sports car, but it is notable that these numbers, reported by Automotive News, suggest that the EV has met its first hurdle and is selling well enough to surprise even Ford.

“Mach-E has been much stronger than we expected, so we’ve totally run out of stock,” Ford CEO Jim Farley said, per Automotive News. “Mach-E is going global as we speak, but in the U.S.” the wait for the SUV “is months.”

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Indeed, as Farley suggests, the Mustang Mach-E became the best-selling new vehicle in Norway in May. The market, though small, is seen as a bellwether for EVs since they made up more than 60% of new vehicle sales last month.

Further helping the Mustang Mach-E was its prioritization over the traditional Mustang in the face of the global chip shortage.

“We have purposely protected our launches—Bronco, Bronco Sport, Mach-E, F-150,” Farley said. “If we can switch a module over to one of those launch vehicles, we have. We’re very protective of the launches because they are so important for our business.”

That policy meant that Ford’s Flat Rock, Michigan assembly plant produced no gas-powered Mustangs last month, according to the production data. Still, Ford is excited about the demand for the Mustang Mach-E.

“We are really excited about the success that we are having with our launch of the all-new Mustang Mach-E, not just here in America, but globally too,” Erich Merkle, Ford’s sales analyst told Automotive News.