This is interesting. That adds up to at least 16 laps of "Promotional" running.
Of those 16 (or so), let's say 3 laps behind the Scudo were probably very very slow, but would provide useful data on how much heat was being thrown out by the revised exhaust layout, and more importantly which areas would be affected by this heat.
The rest of the laps though (13 based on the above), were presumably reasonably quick, which would be very useful for evaluating the new updates on the car.
I don't think Ferrari are alone in holding these "Filming" days, but it does smack of circumventing the in-season testing ban rules.
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All the info on heat would have been capable of being collected, without the car even being on track! So there was little benefit in "faking" a filming day.[/quote]
I've no problem with what Ferrari did, 16 laps isn't very much time so I think fair play to them. But I would say that it's quite different running a car on a track than in wind tunnel with a rolling road. Main one being speed - wind tunnels are limited to 50m's a second - the effect of the exhaust gases will vary at different speeds so on track testing is vital.