Ouch! A bit of a tight crop on the 1st one, isn't it? Can't say that I'm a big fan of things growing out of the top of cars, either. You're right though, "...so they aren't all bad.", but the point is that they could be better, no? 
For instance, in #3 could the car have been moved back a bit to eliminate the tree? The last one would be better if you'd cropped just inside the two light poles, & why include the sign in the first place?
OTOH, the car itself does look pretty good for having been shot in bright sunlight, something I'm not a big fan of, either.
Good start under tough conditions!