strange man

Yesterday morning about 3 30am I heard a car door slam. Ever vigilant I got up and looked out of the window to check all appeared be fine.
This morning a strange man appeared here. He was driving up and down our roads paying a lot of attention to parked cars.
I called The lovely MR Smith and told him of my concern. He looked for a minute then gave me a lovely smile, patted my arm and said "Don't worry darling, it's just the road sweeper"
We'll, we do live on Oasis so it was an unusual sight