Anybody hear about these guys?

While we camped 8/1 at Twin Lakes, some guys came through at 1 am by headlamp on their attempt northbound to break the 4 day, 6 hr JMT record.

While at Kearsarge Pass on 8/4 , we met a guy who had come up from Onion Valley in only 1.5 hrs. Said he was on the way to Whitney. I asked him "how many nights, one or two?". He said "none." Planned to do it all as a day hike