That there is a car
3 very nice and diverse shots, good to see 3 different images rather than 3 same same ones...
Composition wise I like them, each has its merits and can hold its own without excessive PP. The PP is a bit much for my liking, the green filter (or whatever it is) is a bit off putting. In nutshell I reckon backing off the strength of the PP by about 50% and they would be to my taste.
The vignetting in image 2 could be imporved by not applying it all corners of the image, don't be afraid to apply vignetting to only two or three corners. In this case I would leave the sky as it is since thats the first thing my brain went to rather than the car.
hth
PS welcome to DSLRusers