Photo - A man who identified himself as a cousin of the victim sits alone in the middle of the Roosevelt Boulevard near the scene of a fatal accident in the Olney section of Philadelphia on Tuesday July 16, 2013. Philadelphia police are investigating whether cars may have been drag racing when a mother and two young sons were struck and killed attempting to cross a busy highway. The woman's two other sons ages 4 and 5 are in critical condition. (AP Photo/ Joseph Kaczmarek)