Forgot to post about it here, saw my first F12 last week while in Los Angeles visiting my family. (On the steep part of La Cienega north of Santa Monica for anybody who knows the area.)
Oh, another LA-area sighting happened while we were down there for Thanksgiving. We were driving from my parents' place where we'd stayed the previous night to my uncle's place in Santa Barbara, and on the 101 somewhere around Tarzana or Thousand Oaks we ended up behind a silver Carrera GT. Naturally I got excited, but my GF was like "ugh, that looks like a rich douchebag's car." I try to argue, and as it slows down to get off, we pull up next to it and see the driver. It's Jay Leno. GF "See, I said it was some rich douchebag."