Liability
I don't want cars controlled by buggy software on the roads until the liability questions are resolved. Will the self-driving cars come with the standard EULA saying the software company is not liable for any loss associated with the use of their buggy mess? So, they can snatch all your data, crash and kill you, but, you can never hold them liable for any of it? And, I'm sure none of them would cheat. That would be like designing software to avoid regulators or falsify emission test results. Who would do such things?