And finally, for people who like the idea of 'ultimate low drag shapes':
Note: the final column is not Cd but instead CdA. However, as you can see, the nominated frontal areas are all pretty close to 1 square metre so in turn you can read these as close to the Cd.
These drag values are much lower than the oft-quoted 'ultimate shapes' of the 1930s (and so also of course to any 'template' shape derived from those old shapes).