Compared to our multitude of human glitches they are likely to prove safer.
They won’t get sleepy, they won’t feel ill, they won’t get drunk, their eyesight won’t diminish, they won’t text while driving, get distracted by their friends, speed for the hell of it.
The computing power to make it work is already cheap and available. Pack enough of a variety of sensors, radar, cameras into the vehicle and it should exceed our capabilities. Building software that can always recognize people and animals is probably where development is at right now.
Our glitches are avoidable. Don’t drink while driving. Don’t text. Pull over and rest or have a partner and drive in shifts. Our glitches are also understandable. A computer glitch can come out of nowhere, when you least expect it, at the worst possible moment. It can go HAL 9000 on you and wreak death and destruction.