4
I have drawn a simple car with this code:
\begin{tikzpicture}
\shade[top color=red, bottom color=white, shading angle={135}]
[draw=black,fill=red!20,rounded corners=1.2ex,very thick] (1.5,.5) rectangle (6.5,2.5);
\draw[draw=black,fill=gray!50,thick] (3,.5) circle (.5);
\draw[...