Agreed. I thought it would look strange without a black border to act as a 'trim piece'. The trim piece actually looks weird.
Proper roof. Added the second white jug on the back. Lug nuts on wheels. Tuned up the tires a bit more.
Darkened up my Inkscape desk so the white backer was more prominent. Made the colors a bit more realistic by using the dropper on the reference pic to define the fill colors. Second layer is lighter black. Stroke color on the top layer matches the color of the second layer. This should be a pretty realistic view of what the final product may look like.
Rev ZZ.JPG