"One Google car, in a test in 2009,..."
One would think that in 6 years some improvements would have been made. Do we have a more current example?
It mentions further down in the article that that particular example has already been corrected.
... For instance, at four-way stops, the program lets the car inch forward, as the rest of us might, asserting its turn while looking for signs that it is being allowed to go.
"What if" is a trademark of Hewlett Packard, so stop using it in your sentences without permission, or risk being sued.