Touched up the car a lil but didn't go crazy because you said to keep it simple. Car still needs some touching up with the lighting and tone/color management department (which i can do if desired... just takes more time). Overall good shots though. There isn't much i can do with the other two photos. i can also work up a single photo with all three. I would probably change out the background (trees) and do a timeline like effect for the road incorporating the "Challenger R/T" logo and the "383 Magnum" logo and maybe a couple pics of you and your father ghosted into whichever background i can find that is suitable.
(NOTE - these are low res copies... if you want anything quality and printable I will need the original files. When you post to hosting sites they lower the size (detail/quality/resolution) without you knowing it.)
