The container IS at posted coordinates and to qualify you must have a combined 2000 finds between "Bicycles" and/or "Motorcycles" attributes.
This is a challenge cache and you must meet the requirements before claiming a find. Obviously, feel free to sign log anytime and log a 'find' when you qualify. D/T is for the challenge, actual hide is more like 1.5/1.5. Log only, enjoy!