I only noticed two small things:
Right side brake light seemed a little dimmer than the left. Turn signals seemed the same. Could have been the angle of the sun light.
And when you pulled around the slow poke there was a little puff of grayish smoke. Nothing bad. I didn't catch a scent. So can't see if it might have been oil or bit excess fuel.
Well three things - your car was much cleaner and shinier than mine. Oh never mind, that's not unusual. LOL