Back in the late 1980's, I lived in the Denver area and worked at Martin-Marietta in Deer Creek Canyon. We got hit with a June hailstorm and I remember watching it taking out windshields of cars in the parking lot left and right. Nothing anyone could do, no place to move the cars. We were lucky we were inside a protected structure for ourselves, but our cars were toast. Hail was maybe 1/2 to 1 inch in diameter, which believe me is still pretty darned big.
I was fortunate. I was driving a '69 VW Bug at the time, and for whatever reason - thicker steel, the shape of the body style, or what - my car suffered no damage at all. Other cars looked like someone had walked on them with golf cleats, and smashed windshields and back windows everywhere.