"when will people other than beta testers get in them?"
When they do the correct term will be "guinea pigs". The unfortunate aspect of this is that while the guinea pigs who get into the cars will be volunteers those in the surrounding traffic or on foot will be innocent bystanders.
I've made the point before but it still needs reiterating: compensation for death, injury or damage to innocent bystanders and their property should not rely on them having to take on manufacturer or insurance funded lawyers in court.