Of course, the chances of such a clear-cut moral dilemma are likely worse than the chances of winning the lottery. Besides, if the ice is so slippery that you can't stop, it's likely too slippery to steer off the road.
There are very few legitimate reasons for someone to purposely steer off the road at highway speeds, but many reasons for the car to prevent it.
Well, lottery is won several times per week :) it doesn't have to affect you directly to cause a general population concern, multimillion dollar suits, and a setback in the autonomous driving industry.
There are very few legitimate reasons for someone to purposely steer off the road at highway speeds, but many reasons for the car to prevent it.