Crashing trains is easily half the appeal of this game. I once launched a loco backwards at 100% throuttle. It had VERY bad physics so it was up to 80 in no time. The problem was I wasn't paying attention to what I was doing. I meant to be going forward. I was in a C40 and slammed into two old RS-1's that were parked on the turn table and in the roundhouse. The results were impressive! The engine I was driving was on its side in the turntable. The first RS stopped just outside the roundhouse wall. The 2nd RS that was already in the roundhouse went flying UP the hill behind the roundhouse. A very very cool wreck! Plowing off the end of a siding and going down into a river is another great one!