Inclement weather sure. But that reeks havoc now on human drivers. So again the threshold is BETTER, not perfect. Speed is not really a big issue. The thing with 'connected' vehicles is that when one vehicle starts breaking they all start breaking. There is not the lag there is compared to human drivers which causes big problems and accidents. again perfect is not the goal, just BETTER. Way better. it will be a mix of google map proximity plotting and near field communications and other tech that keeps the cars in constant contact. I do agree that areas with Winter or hazardous weather will be the biggest challenge. I am most referring to the vast bulk of driving which is every day good weather, normal condition driving. the biggest gains will be in that huge market.