Fastest cat in my experience was Margaret.
There's a story behind Margaret.
We saw her one dawn peeking out from the Chevy Apache truckbed.
Fed her. Did the usual, checking shelters if there were calls re such a cat, putting up signs, looking for signs.
Called the woman who would later be my business partner, very competent with animals and has a mushy heart on top of that. We long argued about that conversation, but I felt perfectly good to drop off - half way across LA - Margaret behind her business door in what, I don't remember, an ok container, since I said I would, with time, and so on. She remembers Margaret as a surprise cat.
She was of course always wrong, except when I was. Anyway, Margaret became part of her menagerie.
Sometime later, I was a consultant to her firm, doing my own designing in my own place the rest of the time. But I had a desk and area set up there, a completely wonderful studio, as it happens.
Garcia and Margaret were there, as was often the doberman before the oft mentioned Derby.
So one day I was drawing away, pencil, very big plan, many hours into it, let's say 3 x 4 feet very detailed, and Margaret dropped onto the drawing. Like a flash I had her and tossed her.
I still have a visible scar approaching five inches long.