This hopefully will add to your fun while here today, giving you the chance to walk around a bit.
The posted coords will bring you here, to the first stage. This stage is a virtual stage (there isn't anything hidden here). At this stage, your mission is to make note of the number on the structure standing here. Can't miss it really, but you'll need this number in order to find the final. This number is the last 3 digits of the WEST coords. The final location is a nearby walk, so no reason to move the car.
The final has the same NORTH coords as the first stage, but for the West, you'll change the last 3 digits of the first stage coords to the 3 digit number you've just found here. That's it!
The final contains just a log to sign in. Please replace as found. Have fun!