When the Bicycle brand was first created, bicycles were a new invention, extremely popular. Over time, "auto-bikes" (early motorcycles) and cars were the themes of many decks, as well as the wheels upon which they rolled.
These days, popularity of bicycles (and practically everything involving effort, the outdoors and no video monitor) are fairly low - sales of bicycles have been declining for several years now as Generation X, 11% smaller than the preceding generation, become the driving force in the economy, and children and juveniles have been dropping out of bicycle riding in large numbers, only some of which can be made up for by a slight uptick in commuters using bikes and bike-related businesses such as messenger services and restaurants offering delivery.
I would think this would be a good idea to bring to the bike manufacturers more so than the designers of custom decks. They're the ones hoping to raise public awareness and usage of bicycles, particularly in urban communities particularly well-suited for bicycles as a mode of transportation, so they could seriously use the promotion. (It also wouldn't hurt if they lowered the prices down from the high three figures and low four figures! No bicycle should cost nearly as much as the cheapest economy car.) But it's also a matter of raising the bar in terms of governments providing the places where bikers can ride without being forced between faster and more dangerous cars - Ex-Mayor Mike Bloomberg of New York launched a huge campaign to make the city more pedestrian, bus and bike-friendly - while at the same time aggravating some drivers. More cities should follow that lead.