After the bus goes by, Doug is still wearing his button-up shirt like it was before. It then cuts to a close-up, and about half of it is hanging off him.
The red street curbs that you see as the bus rolls by is a southern California way of telling you it's a no parking zone. New York City doesn't use red curbs, they use signs.
When Spence hangs up the phone talking to Danny, the beep sounds before he presses the button.