I've had two smart sightings since my purchase. One was on Sunset Blvd, just east of Pacific Coast Highway. A white/silver 451 heading the other way.
Second was parked in Westwood Village in Los Angeles. A yellow/silver 450. Still had its temp registration in the window, saw it was a 2005 coupe just purchased a few weeks ago. Note the gray market lights, and crummy padding on the ceiling.
I parked mine behind it (yes, illegally in the red) and got a few cell phone pics.