Despite meagre resources, the duo have devised a creative flower-petal design that will right their vehicle if it flips over during the race, in much the same way that an insect gets back on its feet when turned over.

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She held a thin stick in her hand and was drawing with it in the sand, bringing a flower to life petal by grainy petal.

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Stripes on petal veins direct bumblebees to the flower's "central landing platform" and entrance to gather nectar and pollen.

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All of the pieces are embellished with filigree petal cut stones, honoring the Grace de Monaco pink rose, a flower named after Kelly in 1956 for her wedding day.

FORBES: The Montblanc Princess Grace Collection