Todd's got a good point. Most software will allow you to select levels on a per-color basis. I hope you don't mind, but I took your color version made a new B&W version where the red is lighter, to set it apart from the black fenders.
I processed it in Lightroom, and turned the "clarity" slider down to hide some of the hard-edge details that give away the fact that it's a toy, and to give it a more old-timey feel. Again, I hope you don't mind me messing with your picture.
I would also turn the front wheels in the opposite direction to hide some of the plastic bits beneath. I've always thought automotive shots look better with the side of the wheel angled towards the camera, rather than the tire tread, but that's just my opinion.