It was the last week in June, and José De Bardi hadn’t gotten much sleep. The trouble had really kicked off on June 18, about a week earlier, when the electric vehicle company Fisker announced it had filed for bankruptcy protection. Now some 6,400 Fisker owners like De Bardi wondered: What will happen to their cars in the future?The bankruptcy “lit a fire,” De Bardi says. “We had to get organized if we had any chance of representing owners’ interests.” Within days, he and a handful of other Fisk...