I know we have all done this before (or I hope I'm not the only one). I had just finished weedeating a dang ditch this morning, walked to the trailor and put my weedeater back on the rack, was just fixing to lock it down. About that time the client came out and started talking and she is one of those kind you have to escape from. When I got away from her I forgot that I had gotten sidetracked and did not secure the weekwhacker down. I get on the highway, get up to 55 and hear and sound I did not want to hear. I knew what it was before I looked in my mirror and saw my Redmax bouncing end over end on a four lane road before winding up in someone's driveway. I cussed myself for getting sidetracked and forgetting to secure a 300 dollar weedeater. Turn around and go retrive it. Had a broken spark plug and the plastic engine cover was cracked. Got to next account, install new plug and it fires on the first pull. I have done this same thing twice over the years with a Echo weedeater and they were destroyed. Not something I want to try everyday. What was really surprising is that in stayed on the rack for over a mile before coming loose and that was bouncing down a dirt road before getting to the pavement.