I remember that promo from before the Concorde went "poof" (I don't remember whether it was duplicated again later), and I remember that all members of your "family" could do those test drives, and one member in the FT thread about that promo said he signed up his dog (!) and got another 5000 miles from his dog "test driving" the Jaguar (obviously, as you said, just taking the miles and not driving). I think there were people who did an award flight on the Concorde with miles that came largely from Jaguar "test driving"!