Well I screwed up yesterday morning.
I usually back into the driveway but when coming back from taking my daughter to school I pulled in due to it being trash day and I had my cans at the end of the driveway on the left and my neighbor had his on the right between our driveways and it was just easier (I had 3 containers and neighbor had 3, trash, recycles, yard waste).
A bit later when I went to leave for work the trash truck was there emptying the cans so I sat there for a minute or two waiting while watching in the rear view mirror. The wife's Acadia was parked behind me to my left and I actually forgot that she was off work (she's usually already at work) so when backing up I started to move to the middle of the driveway to avoid the trash cans and hit the Acadia.
The Yukon's driver rear panel just behind wheel well.....
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Acadia passenger rear at same area....
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It's mostly just paint damage, but there is a small golf ball sized dent on both vehicles. Right behind the wheel well on the Yukon and right on the wheel well lip on the Acadia.