MIDTOWN, Manhattan – A dirtbike motorcyclist is dead after rear-ending a van full of 20 somethings on their way to a party, Saturday night around 11:30 pm. The van was waiting at a red light when this occurred. The driver stayed on scene. NYPD CIS investigating. As per Highway sergeant, the victim was DOA. No CPR, no ambulance transport. The dirtbike appeared undamaged.