Some years back I got a similar bill from Denver, Colorado claiming that I and my painfully stock 1983 Suzuki Samurai were photographed on a weekday doing 90 on a speed-trapped Photo-Enforcement portion of their in-town freeway. I pointed out that I'd have to have left Bullhead City, Arizona after work, driven 1000 miles to Denver averaging maybe 90 MPH to get there, gotten the old girl up to terminal velocity thru their speed trap, then drove home at the same breakneck pace so as to make it to work the next day. They eventually agreed that the people that check the photos must have made a mistake. Either that or I owned the fastest Samurai on the West and had too much time on my hands.