Last year's #helmetdesignchallenge showed how the momentum of a sketch theme can really take off on social media. I took a couple of stabs at that theme as I love a good challenge. For 2017's first challenge, the theme introduced on Instagram is #marsracerschallenge. I was tagged by Swaroop Roy to join up and this is what I came up with. Good exercise in unearthly lighting and color- I needed the practice!