* Very few people drive the speed limit, so you're now stuck at being the slowest car on the road. (This will still be a problem under this law because new vehicles are the only ones affected.)
* Inaccurate/out of date speed limits.
* Impossible to pass anyone on a two lane road.
* Having the car take over control is very disorienting for a skilled driver who expects the machine to function as an extension of their body. See the number of people who prefer manual transmission and who eschew cruise control.
* Very few people drive the speed limit, so you're now stuck at being the slowest car on the road. (This will still be a problem under this law because new vehicles are the only ones affected.)
* Inaccurate/out of date speed limits.
* Impossible to pass anyone on a two lane road.
* Having the car take over control is very disorienting for a skilled driver who expects the machine to function as an extension of their body. See the number of people who prefer manual transmission and who eschew cruise control.