Business owners on Gratiot Avenue in Eastpointe were busy this week polishing up their properties and stocking inventory in advance of the Cruisin' Gratiot event that takes over the strip on Saturday.Now in its 20th year, Cruisin' Gratiot is an annual week-long celebration of automotive history, tradition and memorabilia in Eastpointe, one of the area's best-known classic car events and the only one with a special lane designated solely for cruisers by the Michigan Department of Transportation.