docfox: Excellent article. Very well written. I had a good laugh at your "bug-beard". Thanks for the link!Sawdust - you captured a terrifying road hazard for motorcyclists! I got introduced to those "rain grooves" almost 50 years ago riding a BMW R-69 from Michigan to Connecticut. The fearful memory of those grooves remains with me today. You can read about my experience here >>> my PDF document <<<.