You mean like googles self driving car that has logged something like 1/2 dozen "mishaps" in one year?
Google's cars have driven over a million miles and have been responsible for exactly 1 crash, that occured at 2mph:
https://www.wired.com/2016/02/googles-self-driving-car-may-caused-first-crash/
How many accidents do human drivers average in that same amount of miles driven?
You will never take the human element completly out of driving. A computer cannot reason, therefore, if the road is icy, foggy, etc, all that car knows is what the posted speed limit is.
Cars already know how to handle icy roads with advanced traction and stability control. Is it that far fetched to think that the computer processing power might increase, improving their abilities? I'd think that especially for foggy roads, the car's sensors would be able to detect things in their path better than human eyes would.
Besides, states wont allow it in large numbers, they make to much off traffic fines.
What constitutional right would they have to do that? Denying people an option that is statistically far safer in order to preserve some minor income from traffic citations would be a foolish limitation on the free market. They'll just find a way to offset the lost revenue with new taxes.
Not to mention, a computer cant back up a trailer, desend a steep grade, or compensate for ANYTHING unless it is givin the parameters.
This one does everything but back the trailer up, and how long will it be before it can handle that too?:
http://inhabitat.com/self-driving-semi-truck-makes-the-first-ever-autonomous-beer-run/
Lets say your blasting down the interstate on a nice day, hit a construction zone that is not logged in gps data, person slows to 55, gps car continues on said path untill it realizes its taking out barrels and hits a portashitter before it stops.
You can buy vehicles right now that will avoid this situation. Adaptive cruise control will change the speed of your vehicle by sensing nearby vehicles. Automatic braking can apply the brakes for you if you're accelerating toward a slower vehicle, bringing you to a complete stop. Lane change detection options exist right now too that will warn you if you're about to move into a lane occupied by another vehicle, or if you cross the center line. As the tech develops, and the software programming improves, these systems will work together to give vehicles the ability to safely navigate normal roads.
Give me a good ol RWD V8 powered piece of machinery and lets see if the robo car can follow me down a rutted country road without self destructing its pansy suspension.
I realize the current crop of "pansy" vehicles are intended mostly for on-road use, but there's absolutely nothing that says the vehicle couldn't be a lifted, 4wd truck, or a tracked vehicle like an army tank. You think the military isn't interested in self driving equipment that could drive through any terrain to get wounded out of battle on it's own?
I'm not here to champion these self driving vehicles, because I think it will make being a "car guy" much more difficult and expensive, but I do think it's important to understand where we're going, and we should talk about some of the potential consequences of ending up there. You can complain about all of the new tech making people worse drivers, and you might be right but that argument has been around since the dawn of driving. Do you think there were people complaining that cars in the 40s didn't have to be hand cranked, and that was making people soft? When they added radios, people complained about it being a distraction. When seatbelts were added, some were concerned that it might make people feel too secure behind the wheel and therefore drive more recklessly. It took an act of Congress to allow headlights that weren't sealed beams. Things progress, and safety is typically the reason behind the change, and it will be in the case of autonomous vehicles too. You can accept that, and maybe use the changes to your advantage, or you can complain about how all of this progress is ruining everything. Neither option is going to slow the onset of these changes down.