he had the faculty of urban mobility futures at the university of amsterdam, continental us. the next generation of urban planners in land use and mobility. what is missing in our current conversation about rethinking urban transportation? glad mom i also, she has a lot of ideas on social media about how we use all cities. the streets in our cities always were the remaining space between buildings and in the remaining space between billings, everything happens, social life happens. trading happens, children could play people with me and people could travel through for this change radically in the 1000 twenties 100 years ago. and that was the pressure that was introduced by the motorized vehicle. cars came in large numbers to that street and basically put pressure on the way that we were thinking about the 3, the literally colliding with all these other purposes that were happening in that space. and to respond to that. a whole new domain of thinking was introduced for traffic engineering sort of wasn't born in the 19th thirty's and developed the language around seeing streets