I did these designs for a pitch package at work but we didn't get the job. Ah well! The client was a car-selling website and the idea was to tell the story of a buyer-seller relationship. I designed the characters and backgrounds around the old UPA-style of animation since I had never really animated like that before and thought it'd be fun to do. Maybe next time!
... and for those of you who aren't familiar with UPA (United Productions of America), here's one of their more famous cartoons "Gerald McBoing Boing" from 1951 that won them an Academy Award.