Wrecks like this one happened when I was thinking of something else. I had unplugged the loconet cable from the MAT and plugged it into the Georgetown Sub not remembering that I still had a consist of two analog GP 40 locos sitting on the track coupled to a forty car train. When I turned my Digitrax unit on to operate the switcher on the Georgetown Sub the power to the track on the Mat was also turned on. Without a throttle set at address 00 these two analog locos flew into reverse and this photo shows the result. Sure made me stop and think. I guess it could have been worse.