Physics : In The Daytona 500 Auto Race, A Ford Thunderbird And A Mercedes Benz Are Moving Side By Side Down A?

In the Daytona 500 auto race, a Ford Thunderbird and a Mercedes Benz are moving side by side down a straight-away at 67.0 m/s. The driver of the Thunderbird realizes that she must make a pit stop, and she smoothly slows to a stop over a distance of 250 m. She spends 5.00 s in the pit and then accelerates out, reaching her previous speed of 67.0 m/s after a distance of 390 m. At this point how far has the Thunderbird fallen behind the Mercedes Benz, which has continued at a constant speed?