just do you have the right kind of utility model for drivers I think this is when I say you know when I say that we're taking an extreme point what I mean is this time scale separation between drivers and passengers is a fundamental part of the model it would be interesting to think about what starts happening if drivers are responding more directly to instantaneous state and in particular I think the the way this comes together with the network's comment earlier is if I'm able to provide signals to drivers that say this is a place where I think