(888) 530-5556 342 Market St. SW, Grand Rapids, MI 49503 www.slingshotbikes.com If you want to lessen your carbon footprint on the planet (I know I’ve got one) there are three things you need to do. First, lose two of your tires. Then go see the guys at Slingshot Bikes in Grand Rapids. Slingshot is a bicycle company that’s committed to …