Ford’s best-selling electric vehicle so far is the full-size F-150 Lightning. But the company just revealed secret plans for developing smaller, less expensive EVs.

During the automaker’s fourth-quarter earnings call this week, CEO Jim Farley said his company “made a bet in silence two years ago.”

“We developed a super-talented skunkworks team to create a low-cost EV platform. It was a small group, small team, some of the best EV engineers in the world, and it was separate from the Ford mothership. It was a start-up,” Farley said.

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