Thanks for the nice comments.
Rob: When I do whitewhash, I paint the vehicle dunkelgelb all over. Then I mix an off-white color, which I spray on in an uneven coat, so some of the basecolor shines through here and there. When dry, I use the sponge method to make the chipped effect around the edges, and a small brush for chips elsewhere. the finnishing touches are made with different dark washes and a bit of very lokal drybrushing.
Yes, I agree with the track color. It is too rusty in contrast to the very light colored vehicle.
Best regards.
Jacob