[gallery link="none" columns="1" size="full" ids="61088"] words: Bill, photo: Top Gear The all electric RS e-tron GT and the petrol BMW M5 CS…a titanic clash between the new and the old. If you are not familiar with the M5 CS, it is a monster. Powered by a 4.4l twin-turbo V8, it cranks out 627hp and 553 lb-ft torque which moves it from 0-60 in 2.9 seconds and is not only the fastest production BMW ever made, it’s the fastest BMW sedan around the Nürburgring. A very worthy opponent to ...