In a highway roll on the Ferrari is already at a disadvantage. 660 horsepower is nothing to sneeze at but the M6 features a Stage 2 tune from PP-Performance. The M6 has more power and torque and it sends that power and torque to the rear wheels. On paper, this is the M6's race.
In the first run the FF does very well. The cars are even up until 130 where the FF lets off. In the second race the M6 jumps on the second honk and pulls easily when the FF lets off (with quite a bit of traffic ahead anyway). The third run again has the M6 get a bit of a lead to start and it isn't much of a run.
The fourth and final run features the best start for the FF. By 110 miles per hour the M6 starts to pull on the FF decisively. By 150 miles per hour it has several car lengths on it but the FF does well considering it is stock.
The tuned M6 is clearly the faster car of the two but the owner really should pick on someone his own size. Beating up a on a stock Ferrari is great and all but it is no surprise to see a tuned twin turbo V8 rear wheel drive M6 take an easy win on the highway.