The difference is that it was a one-and-done thing rather than leapfrogging back and forth as it sounds like `theluketaylor` was describing. And yes, the drive

The difference is that it was a one-and-done thing rather than leapfrogging back and forth as it sounds like `theluketaylor` was describing. And yes, the drivers would coordinate. (I've sometimes seen it done with a brief honk for attention followed by a hand wave.)