As fans parked their cars in the massive parking lot outside Reliant Stadium in Houston, Texas and made their way towards the gates, there was no way of knowing what would transpire later that night. Round six of the Monster Energy AMA Supercross Series may go down in history as one of the craziest races of all time. Fans filed into the beautiful, picturesque venue taking in the track, probably anticipating a tooth-and-nail battle…