I have three issues regarding visibility for safe driving: 1) a couple of weeks ago the computer system of the car experienced a software crash. as a result the side mirrors did not open and the rear view camera did not work. the car was still drive-able i needed to take my son to school so didn't have time to troubleshoot this. this was very unsafe to drive, particularly on the freeway, and i believe it is illegal in california to drive without working mirrors. i contacted tesla about this and they did not offer any specifics. i believe this is a major issue. operational mirrors are essential equipment, i think it is bad design that these are dependent on the same system as the entertainment system. tesla's plan to replace side mirrors with video cameras is worrisome in this regard. 2) the radio control buttons for changing the station on the steering wheel no longer work. i believe this is the result of a software upgrade by tesla. to change the station now requires diverting attention from the road to a touch screen. i have complained about this to tesla and they have replied with any material explanation. 3) when the car is in reverse the backup camera can be blocked on the display by other activity. this is a problem in that a passenger can inadvertently turn off the camera display while car is in reverse motion. a second issue is that the backup camera will occasionally display in some sort of split screen more. it looks like they are trying to display both a wide angle view and narrow view. this only happens randomly (maybe another software issue) but it does diminish the usefulness of the camera. i have not contacted tesla for these issues concerning the rear camera.