...which works out to roughly 3-7 million people. Unless you want to pay them UBI, you're going to have to help them find and transition to other categories of jobs.
I used to drive a taxi. Now I write code. I paid for my own training. I'd expect to find that self-help is the most usual way to transition into other jobs.
That's 1-2% against the interests of almost everyone else that would benefit from driverless cars. Their plights matter, but at they same time they shouldn't have veto power over transformative technologies just because they'll be put out of a job.