I saw an unmarked bus traveling by. They're usually marked. A big bus logo. Something pertaining to the famous passengers. Something about the team, in those cases.
This one was completely unmarked. It was the White Album of buses, definitely traveling incognito.
Barney Fife voice: "Nito, In-cog-nito."
'50s commercial voice: "Kids! It's Neato! In-cog-neato!"
Joe Friday: "My name is Nito, In-cog-Nito."
The Day The Earth Stood still: "Klaatu barada incognito."