Having been a passenger in many vehicles driven by aggressive (insecure) drivers, that flag causes me a lot of concern. I can think of many drivers I know who would hit that flag on purpose, and consider themselves in the right. Hopefully you won't meet up with any of them.
I like the foam noodle, though.
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-=- '05 Jamis Nova -=- '04 Fuji Absolute -=- '94 Trek 820 -=- '77 Schwinn Scrambler 36/36 -=-
Friends don't let friends use brifters.