Innovation vs. Improvement

Was adding the lion to the side-car of an old jalopy an innovation or just and improvment to the exisiting feat? I argue that it was just an improvment. Innovation entails creation of new types of problems. While adding the lion in the side-car created new problems for the operators, it did not create a new type of problem. Thus, this can not be regarded as innovation. What do you think? Tweet me with your thoughts.