The actual document/documents is/are now in Beaulieu, and as anyone who has tried to see these, it isn't easy! Confessing I was much nearer eighteen then than I am now, it was two sheets of A4, folded to make a sort of eight page book. A profile picture of the proposed design, which was very rounded in comparision to what appeared on Donald's drive, which kicked up at the tail to a single nozzle. The rear wheels mounted in HUGE rounded aerodynamic spats, and a central tailfin. Inside was a similar drawing/sketch showing a basic spaceframe. In the centre one of Ken's sketches showing the car, on a run, with Ken's "whoosh" lines and the words "Bluebird, Campbell Norris 8". I got the impression, simply because it followed Campbell Norris 7!!! I'm sure you recall the hundreds of memos in Ken's writing, and one of these said, "It has to be Bluebird, but it doesn't tell me what it's for!!! Maybe for the press Bluebird Mach One", then underneath someone had written "Mach 1.1, we want to exceed it". It may be possible that CN8 was in house, and resurected after a while, and if I can get the archive log to load in Vista, I am sure there was CN1,2,3,4,5,6,7,8,9,and 10 (the last being the amphibious CN7 a like, that spawned the X10 Quicksilver design??).
When I first met Ken he was still in Norris House, and the drawing archive was at the bottom of the lift shaft (some say there are still tubes down there!!), and the drawing log was already becoming a mess, after the move to Bournemouth, the log was a waste of time!!
The "CN8" I saw was a tricycle, which then developed into two closely mounted twin front wheels. The drawings of Mach 1.1, some with stress calc's and measurements, so much later, had the twin, faired in front wheels, with the hollow in between and very little wheel showing, the very square lined rear wheel fairings. The three piece flat glass screens, and the twin rocket motors, piggy backed at the rear, but no central tail fin.
My guess is, that both names existed, much as Blue Birds and Bluebirds, but rather than Blue Bird (Sir Malcolm' vehicles) and Bluebird (for Donald's) it really depended on who was quoting it! Regardless, I'd love to know what speed the design would have achieved, especially in light of Breedlove's Sonic Arrow looking SO similar, although I wouldn't have wanted to sit right up front!!!!
Steve Holter, UK and France, and sometimes reality....................