Hmm. It identified my everyday profile picture (https://www.facebook.com/eddy.robinson) as a 'smoking car.' I had to resist the temptation to confirm this as a great guess.
I used another head shot, with a two-thirds view profile, and it also gave "smoking car".
Some of my tests came out as instrumentation which made no sense.
Need to test with a category of images and see what % of results come out matching the category.