One minute Greensburg High School student and with the blink of an eye and handout of diploma -Drew Messer cuts the ribbon on his first post GCHS business venture as owner/operator of Tree City Lube. Members of the Greensburg/Decatur County Chamber of Commerce conducted the event on Friday. Drew is surrounded by Chamber members and his parents – Brian and Angie Messer, sister Hanna and puppy Dipstick.