We're going to go from science to math today:
bike + windy descent = high speeds
high speeds + bike = danger
windy descent + car = poor visibility
car + bike + 2(windy descent) = high speeds + poor visibility
high speeds + poor visibility = LOTS of danger
LOTS of danger = bad
Summary for cyclists: Wear a helmet and let cars pass when it is safe.
Summary for drivers: PLEASE do not try to pass on a windy downhill road when the bike in front of you is already exceeding the speed limit. Homicide is not pretty.
We will return to your regularly (sorta) scheduled science eventually... right now the weather is just too pretty to be riding a trainer.