Is that a Buick wagon in the photo next to the Crown Vic? I'd take a photo of that, if I saw it. Might not post it here, since it probably wouldn't meet with much enthusiasm, but those late 70's early 80's models that were common are now getting rare. I took a photo of a mint looking Yugo the other day because how many of them can possibly be left? But wagons are cool by default, so I'd probably post it here after all.
I've come very close to taking a photo of an Altezza/IS300, those are seriously sweet sedans. But they're fairly common. But they do look nice...
Here's an exercise for while you're driving around. Try to identify every car you see. Spend a good hour here and there just reading through model lists for the big manufacturers on wikipedia, and then see if you can spot them. Eventually, after a year or so probably, you'll be able to identify 90% of the cars on the road. But only if you really want to be able to know what they are... I could spend 1/2 hour per car going off just a badge (say Chevy) and then hitting wikipedia to identify the model, then google images to confirm the year (which is more tedious than you might think...) But when I can finally say "1961 Impala" and be 100% confident, all on my own, it feels pretty good.
What about reverse image search, would that work on a tablet?