Years ago, the FBO next to my hanger at Merrill Field, Anchorage spent six months totally rebuilding and repainting a V-tailed Bonanza for a customer. It was beautiful. They put in a factory new engine and prop. The rebuild crew called the Chief Mechanic over and told him it was done. He jumped in the cockpit and fired it up without having the hanger doors opened. The hanger floor had recently been repainted a hard gloss gray. One small problem. The throttle control lever on the carb had been installed backward. Full back was full on, not full off and full forward was full off, not full on. The Chief Mechanic upon starting the engine was faced with a full power situation. He hit the brakes just after the A/C started to roll, but there was enough forward momentum by that time for the roll to continue even with locked brakes. He was not able to find a way to kill the engine in time. The A/C went into the heavy steel doors and ruined the prop, engine, one wing tip and most of the paint job. The last I heard they were just going to total the A/C and salvage for parts. I have no idea what happened to the three mechanics involved. ........ Big Cholla