If the odometer stays on the same mileage as when you arrived at the friend's house, then one stayed at the same 30 mph on the tripminder.
If the odometer runs backwards to the original starting point for recording, then you never left and your wife will not know you went to that "off limits" friend's house.
"That's my story and I'm sticking to it."
“That’s my story and I’m sticking to it.”
Having lived in the great state of Texas for a few years.
I learned there ain’t no arguing with cowboy logic.