My Cobra was carefully selected to be hail resistant! Aluminum was out of the question, and fiberglass was known to check (from other owners) so I got carbon fiber. I was on the way home from one of the Good Guys shows and started home just as the rain blew in - it literally took only minutes from spotting the front to when it arrived. I started south on I25 and it was a mess - splash from other cars so I got off on Hwy 34 (the other road to Estes Park through Big Thompson Canyon) and started heading west and south. Looked like I was out of it and then a hail storm hit. Couldn't see anything and they were big - larger than a nickel but smaller than a quarter. Boy did they hurt. I was wearing a baseball cap so my bald spot didn't get hurt but my ears were bloody. Parked under a tree next to another car show refugee. The storm moved on and lo and behold, if we'd have driven about 500 yards further we would have been out of it (the hail, probably not the rain). When I got home I scooped hail out of the passenger side floor and seat, 3-4" collected there while sat under the tonneau cover.
Car came through like a champ although there were some sizeable dents in the aluminum mirrors.
Cobras are like motorcycles - one rarely deliberately heads into the center of a thunderstorm
But in Colorado they come very fast. My experience with the windshield is similar. Rain flows over your head but seems to weep over and then back down the inside. The defroster was useless. Back of my hand wiping rain drops off the inside. The winter grounds were later sold to a developer, Normally the land would have been divided into 40 acre parcels each with its own house and well. He got a "transfer of development rights" to cluster the homes on 5 acre parcels and the remainder placed under a conservation easement (never to be developed) and the ranch still grazes winter there.