I think it's pretty likely that a human driver would have collided with the truck. A major difference is that (from watching the uncompressed footage), a human

I think it's pretty likely that a human driver would have collided with the truck. A major difference is that (from watching the uncompressed footage), a human driver would likely have stomped on the breaks before impact. That last minute breaking could make a world of difference. A collision at 75 mph has a lot more energy (4.5x ish) than a collision at 35 mph. So every 1/10s of breaking will do a lot to reduce the damage of the impact. That's one of my concerns about driverless vehicles that I want to see the statistics on. I have a hunch that automation will reduce the absolute number of impacts, but may lead the impacts that remain could be higher energy impacts, because they result from a classification error.