A 64-year-old woman was left in a coma after she was brutally attacked by a man who choked her till she became unconscious and then raped her.    A 38 year old sex predator known as Frankie Harris, has been arrested over the weekend for the brutal attack on a 64 year old woman in New York.     Surveillance video obtained by cops shows the attacker rode past the woman on a Citi Bike, parked it between two cars …