Infiniti Q50 Hybrid leaves, all-electric Audi e-tron arrives, Tesla investigation grows: The Week in Reverse

2019 Audi e-tron quattro, in European trim, at San Francisco launch eventAre federal officials investigating Tesla CEO Elon Musk? Even more than they already may be? How much will the new 2019 Nissan Leaf cost when it goes on sale? And what about a bigger battery already? And what about Audi's anticipated all-electric model? This is our look back on the week in green cars ending Sept. 21, 2018, right here on Green Car...