1989 Jaguar XJ-S V12 Convertible Back Road Cruise

All original V-12 Jag XJ-S Convertible sold recently on BringATrailer. Headed to a new owner in New York.
3 mile drive on back roads and neighborhood streets. Remember, this car has NOT been detailed.
Note: in this video the windows are up and the starter motor is so quiet, you can't hear it spin. You can hear me CLANKING the heavy metal key fob TWICE as I start the car. There are no starter issues! The health of the starter is accurately captured in the "Cold Start" video.
Notice also how deftly I lower the camera at the 2:00 minute mark as I encounter the unexpected local cop. Shooting videos (by the driver) with a smartphone is illegal in NC. :)
Update 4/10/19: I've been driving the car a bit since this video was shot. I've noticed that the car runs better when cold vs. hot. Today, I drove in heat and heavy stop-and-go traffic. I got a bit of rough idling that cleared up when underway.
I suspect this issue might be a cold start injector that needs attention or perhaps a plug wire that's heat deteriorated.