Just The Tip-sters

January 2, 1999 was an average day in sleepy suburban Mesa Arizona when, as dusk was falling, 11 year-old Mikelle Biggs and her sister Kimber thought they heard the sound of an ice cream truck coming up the street as they were playing outside their house.  Mikelle ran into the house and convinced her mother – who was just starting dinner, to give her some quarters so she and Kimber could buy a treat.  Racing back outside, Mikelle borrowed Kimber’s brand new pink bicycle – which Kimber had just gotten for Christmas only 8 days prior.  Seeing her sister riding up the street on her bike, Kimber decided to go back into the house to get a jacket.  It took her all of 90 seconds to return to the front yard where she would run to catch up with Mikelle.  But instead of seeing her sister riding farther up the street, what Kimber saw instead was her empty bike, lying on its side in the middle of the street, pointed back in the direction of their house – the front wheel still spinning.  In 90 seconds – Mikelle Biggs went