CoMobility is a transdisciplinary international research project analyzing attitudes and behaviors related to mobility, particularly services that offer alternatives to private cars. Through this co-creation process, we will identify barriers and opportunities in promoting different modes of transportation and identify actions that will facilitate a lasting change in transportation habits. Together with local communities, entrepreneurs, and officials, we aim to co-create climate-neutral solutions, and we plan to share our Warsaw experiences and research findings with local governments and other cities in Poland and Europe. The project's outcomes include a set of methods for co-creating new transportation solutions and tools for assessing their impact on air quality in Warsaw. The project's results (an integrated transportation-environmental model and documentation of the co-creation process) will be publicly available and discussed during workshops with potential users.