Ooooh very nice!
On the original 4:
1) I like the background, the colours are lovely but I think you have blown the colour of the car...
2) Don't like the flash on the front of the car, again background is lovely
3) Sky and grass are lovely again, really nice, but feel the car is too small to be the subject
4) Definitely the pick of the four, nice composition, the colours work to emphasis the car, although the feel of it now is of one of those motivational posters, almost needs a slogan across the bottom, perhaps something like "not everything orange is a fruit" ;-) sorry, ran out of funny lines for once here!