some people say they have a way of solying the problems of car crowding and pollution . in a large number of cities , hundreds of people ride bikes towork every day .in new york , some bike rides have even made a group "bike for a better city ".they say that if more people ride bikes to work, there will be fewer cars and less dirty air from car engines . for several years this group has tried to get help for bike rides .they want to have special roads for bikes only ,because when bike riders use the same roads ,more people will use bikes .