I vaguely recall you mentioning that a while ago! I've seen some research into ridesharing, but I'm not sure that's the same. The Dutch urban transportation market is quite different from the US market, with public transportation and bicycling having a much higher market share and coverage. For every trip that someone makes by car, someone else makes a trip by bike. This means that most people that are served by Chariot will probably have access to at least a mediocre level of public transport or a bike, which makes the market segment for vanpooling much smaller. The closest we have is municipality-owned 'on-demand' transport services, hoping to help bring transport to the elderly and people who can't afford a car or ride a bike. But it is objectively terrible, requiring people to reserve very wide time slots (e.g. 'we will pick you up somewhere between 9 and 12') both ways.