This is my third version. It's the same motive, but this time I replaced the racing car with a cyclist. To complete the ecological message, I added an "out of gas" sign.
Note that there are several more versions available.
I was considerably faster this time, and in the meantime I had found out why it's so difficult to apply the oil-painting technique: The textile paint dries much faster; but you can only model details with brush-strokes as long as the paint is wet. When the paint has dried, there is no way to change the arrangements of colors; all you can do is add details. Problem solved. However, I still challenged myself do to a last version in a single day.
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