Wilson was driving home from the hospital after having finished a long shift. He'd barely seen House all day except for when he'd pass by occasionally in the hall with Walpole and he'd just hang on every word Walpole said and ignore Wilson.
Wilson happened to drive past George's, his and House's favorite place to get takeout chili cheeseburgers and fries, when he saw House's car parked in front. He slowed down slightly.
Then he saw House come out with Walpole, carrying takeout bags and talking and laughing.
Wilson gunned the motor and had to swerve to avoid hitting a tree.