Photo: Brendan McDermid/Reuters At the start of the year, after Hertz announced it was selling off its fleet of Teslas — backtracking on a plan to buy up 100,000 of the electric vehicles — the news sounded good for Bijay Pandey, a 34-year-old self-employed data worker in Irving, Texas. “I have another vehicle, and I was trying to add one for my wife because gas prices were too high,” he said. When he found out that it came with a $4,000 tax credit — even better. “That’s what attracted me,” he ad...