This shows both cars in one shot. That car on the left parked in a weird way. Why would you pull in so that your door was on the opposite side of the car? Or is that just me? In the Google image taken in the nicer weather the vehicle close to the front door faces the other way. That way you don't have to walk around the car to get in.
I sure wish we had a VI to tell us if that was normal for them.
Also looking at the floor plan, the garage and pool are underground but not under the rest of the house. (Note the spiral staircase placement).
Truthfully the ideal place to take someone to murder them. You wouldn't worry about anyone hearing anything even if there were a slip-up.
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