I did this a while ago, but recently (and very roughly) tweaked the design.
It's a design for the Transformers character Soundwave, done in a hybrid movie/cartoon/toy style. It's a hand-drawn design that I coloured in Photoshop.
The piece is the result of a design poll I organised at a Transformers website. I asked the board members to choose their preferred alt-mode for Soundwave and they submitted their proposals. From that list I made a final poll and then we all voted on the favourite.
The Balkan MK6 was the winning vehicle.
Here's the original:
And here's the (rough) update I did recently: