Well. The best I could do is 35 stitches per minute, using dk weight yarn with US 5 needles. I didn't bother to cast on 60 stitches! Ha! I cast on 36. Almost made it to the end.
It takes good lighting, and perfect concentration. You have to "see" yourself knitting the next stitch in line before doing it.
I knit "american"...not "continental"...but she could ace me doing American style blind-folded!