Bucephalus
Shooting from the lip....
No, bamspeedy did it on chieftan, 5 cities hit 20k on the same turn, which was 2050 AD.
Looks interesting, but I'm making myself hold off on SG's until I find out if I can do them along with high school.
Do you have a link? I don't doubt you, I just don't see how it could be done.