In all my designs I always focus on concept. What am I trying to say about this product or content. A book cover is even a greater example of this. Trying to express the details of the journey ones mind is about to be taken on in a 3 second glance is an exercise in design of the most pure nature. In this book Mr Comfort expresses how transit has changed over time. One system built on top of the past one as we move forward in time.