Most product lines go on a roller dyno before leaving the line, then into the parking area, to the train, around the transfer area and onto the delivery truck. The dealer may need to take it around the block too. Your mileage may vary.
Working in the R&D department of the supplier industry, I was one of those that took vehicles like yours for a ride around the block. My personal truck also went for this type of run and I'm glad it did. The industry is limited by law of far an exemplar can go.
What happens is a group of technical people are selected from OE and suppliers to look for specific issues identified in pre-production, or concerns noted by the plant engineers after builds. A very specific route in the area is laid out away from traffic as much as possible which will encompass driving characteristics of one or more concern issues. With my experiences, it's with two people per vehicle.
The route has to be followed to the letter and everyone I have ever been with has always had great respect for these being a future customers vehicle. In fact if anyone observes you doing anything out of the guidelines you will leave through the plant gate immediately. The groups taking the vehicles out were generally 10 to 20 technical staff (engineers, managers) and we would do this for about 6 hours.
I mentioned that I was glad my personal vehicle was taken for an evaluation ride. Auto engineers are car nuts. While they may not be visible on sites like this, they build hot rods, motorcycles, formula racers, drag racers. My "road trips" were always brake related, but if there were any other issues we observed, such as transmission shifting, any NVH, steering pulls, whatever, that would get noted in the report and the vehicle would be repaired at the plant before getting to the transfer lot. There is only so much checking that can be done on an assembly line, and having two professional automotive enthusiasts personally check my vehicle is a plus in my book.
You've probably all heard a story by someone who stated they once had a ..... that ran like a scalded dog compared to other production vehicles. Doing those test runs one vehicle after another I can tell you that's true. If you are or know a motor builder, hot rodder or racer who has blueprinted motors, they will have told you they gained 30 ... 40 ... 50 hp by balancing and blueprinting. Despite all the computer automation what vehicles go through today, there is still enough tolerance stack to make a difference. When I buy fun toys these days, my first preference has become not the color of the vehicle, but how it runs on the test drive.
And look for that little sticker in the window. It means that vehicle had special QC testing.
