Changing jobs, having children or growing older, all these life changes influence the ways in which people travel. But what exactly has changed? Do people travel more or less for work or leisure activities? Do they switch to other transport modes? And how do other developments, such as Facebook and Twitter, impact car use? With the Netherlands Mobility Panel, these and other questions are answered by the KiM Netherlands Institute for Transport Policy Analysis of the Ministry of Infrastructure and the Environment, Goudappel Coffeng consultancy firm, and the University of Twente, in order to render the Netherlands even more accessible.