> Also, checking behind you has minimal value for drivers. I think I'll keep tracking who's behind me, how close, whether anyone new has appeared, whether anyo

> Also, checking behind you has minimal value for drivers. I think I'll keep tracking who's behind me, how close, whether anyone new has appeared, whether anyone looks likely to pass me soon, and so on, because it's sure as hell been important in practice. Most notably when something goes even slightly wrong in front of me.