(also posting this on Road Cycling Forum)
Here's the scenario: Two-lane country road (one each direction), fairly level. Two riders sharing a route and a sunny day, cruising along at 14 or 15. Hardly any traffic. Second rider pulls up abreast and to left of first rider so they can chat while riding. They become aware that a motor vehicle (piloted by a civilized human) is overtaking them from behind.
Question: What should be done?
Option A: Cyclists remain two-abreast until motorist honks. (Downside of this: Motorist may have sidearm and short temper.)
Option B: Second rider (nearer center of road and on the left of first) speeds up and pulls in ahead of first rider, making a single file again. (Downside of this: The lead has changed.)
Option C: First rider speeds up so that second rider can tuck in behind him. (Downside of this: First rider must be aware of the "threat" and voluntarily accelerate.)
Option D: First rider maintains speed and second rider slows and then gets back behind first where he was previously. (Downside of this: You're slowing in front of the car you're blocking.)
Option E: Other. (Tactics involving one-finger salutes not acceptable.)
What's the Forum's consensus on the appropriate tactic here -- safety-wise and etiquette-wise?