Best deals on green cars, Tesla scrutiny, Swiss stop diesels, EPA pushback: Today’s Car News

Teaser for Pininfarina PF0 electric hypercar debuting at 2019 Geneva auto showThe SEC issues subpoenas to Tesla over CEO Elon Musk's plan to take the company private. Switzerland halts registrations of some diesels from Mercedes-Benz and Porsche. New records show internal pushback at the EPA over freezing fuel-economy regulations. And we run down the best deals on green cars this month. All this and more on Green Car...