Tens of thousands of people die in the US alone each year in car accidents. Many more are injured. Many more than that suffer some financial loss (even with zero insurance deductible, you will be paying a higher rate going forward).
To improve on the status quo, you don't need cars to see through or around solid objects, nor do they need the intellect of an attentive human. We need cars whose drivers never fail to pay attention, don't act like they own the road, don't speed, don't get road rage, don't drink and drive, etc... Autonomous cars can do all of those things.
People keep acting like autonomous cars need to be as good or better than the best human drivers, but they don't. They need to be better than the average human driver, and let's be honest: they're not going to have much problem with that requirement. I'm not sure what sort of automobile mecca some Slashdotters are living in, but where I live I don't go a day without seeing someone doing something stupid in a car. The nice thing about intelligent systems? They know their limitations. If the onboard systems cannot determine the appropriate action to take with very high certainty, they can alert the human in the cockpit and request that the human overrides the computer (pulling over in a safe spot or sending out an SOS if that override doesn't happen...such as might happen if the human has died). Someone earlier asked what might happen to an autonomous car in a blizzard. Was that seriously the best scenario you could think of? How about this: if the earth is blanketed in snow, an autonomous car won't drive through it. That's so stupid only a human would try it.
I'm not oblivious to the fact that there are still a lot of issues to resolve, and a whole lot of testing to be done, before we're ready for autonomous cars to fill the roadways. However, I have a real hard time seeing how these issues somehow outweigh the current cost of crappy drivers in terms of lives, pain and suffering, time, or money.
Autonomous cars make a ton of sense. It is only a matter of time before they hit the roadway on a limited basis (beyond the minor testing already going on in Nevada), and unless they suck, people will realize the world hasn't ended, the autonomous cars have not attacked them, and their daily commute is monotonous and annoying and thus not worth hanging on to, and sales will explode. If you hate the idea of autonomous cars, you are simply out of luck. Your best bet is to lobby for enabling legislation that stipulates a human-operated mode as mandatory, forbids two-way communication during driving (seriously, if this doesn't scare you, this must be the first story you've ever seen on Slashdot), and requires automakers to allow users to opt-out of features that would require sending their location data back to the automaker.