I'm jealous that you can go straight up Whitney without acclimating at all. I did this once, and will never do it again after my head nearly exploded.
You're obviously a very healthy person. Hardcore dude, driving up there, hiking, then driving back in a day! Thumbs up.
For anyone new to the mountains, this person is not typical. LOL.
Indeed. 10 hours round trip, without any acclimatization whatsoever. Incredible!