Speeding has led to bigger issues for a driver stopped in Danbury on Monday.  State Police conducting speed enforcement on the highway clocked a vehicle traveling at 88 miles an hour by exit 6 westbound.  The driver, later identified as 28-year old Jahmel Jaimick Greathouse of Danbury, was pulled over by exit 5.  There was probable cause to search the vehicle and Troopers found a large amount of marijuana, a digital scale, plastic baggies and U.S. currency.  Police narcotics K9 Favor, a black Labrador was used during the search.  Greathouse was released on bond for a court appearance July 7th.  Police seized 7.48 ounces marijuana and $1908.