There is no doubt that computers are necessary in some applications (such as flying an extremely unstable aircraft, or anti-lock braking systems) but I think this thing about sudden right angle intrusions may be potentially more hazardous than just driving carefully and safely.
I don't know that a computer would be actually better. What would happen if there were a pigeon flew across your path?
And you were in traffic and your computer just braked your car. Ok, maybe it would be smart enough to figure out it was a pigeon. Maybe not.
Would you take that chance?
Actually, that brings up another interesting debate. Who would then be responsible for the accident?
Do you remember that scene from "Fight Club"?
"A new car built by my company leaves somewhere traveling at 60 mph. The rear differential locks up. The car crashes and burns with everyone trapped inside. Now, should we initiate a recall? Take the number of vehicles in the field, A, multiply by the probable rate of failure, B, multiply by the average out-of-court settlement, C. A times B times C equals X. If X is less than the cost of a recall, we don't do one."
"Are there a lot of these kinds of accidents?"
"You wouldn't believe."
"Which car company do you work for?"
"A major one."