Sam Racer New Design

For some time we are developing our own story about the boy Sam, he is passionate racer and crazy about cars. Previously we had fully ready and rigged model, we even have rendered animations with that model… you can take a look:
https://www.youtube.com/watch?v=ZLCKq4Pk0e8

But one day we realized that we are not happy with it, and decided to change the design. What do you think?