At that pace grommets can fail and flags fly off onto One more drivers windshield. Flag lifetime is dependent on lots of components when being used over a car. Elements involve car or truck turbulence, flag is flown in slipstream or wind shadow and mixed vehicle speed and wind pace/heading. https://tourguideflagstick87161.humor-blog.com/30913572/considerations-to-know-about-tour-guide-custom-flag