Next Audi RS 7 rumored to be a V-6 plug-in hybrid

Audi is close to revealing a new generation of its A7, and once again, there will be a high-performance RS 7 variant developed by the Audi Sport division. Prototypes of the RS 7 in a new Avant wagon body style have been spotted ahead of an expected debut late this year or early next year. The new A7 lineup will still feature gas engines, some of…