I recall driving at 100 MPH and higher on ice- covered roads in Wyoming in the late 1980s. I worked for RCA and they sent me there on a consulting trip for a secret government project. They hired a bunch of young PhDs and they lived in a farm house out in the boondocks of Wyoming. They had an antenna array that had a 150 mile diameter and their masts were shattering. They drove (while I followed in my rental car) at over 100 MPH on ice covered roads to show me their problem masts and I thought I was going to buy the farm more than once. Scary trip! They were not concerned with getting a speeding ticket.