Ok some number from the UK: http://www.racfoundation.org/m... In 2014, the majority of injured casualties occurred on built-up roads (72 per cent of total casualties). However, the majority of fatalities occurred on non built-up roads (just over a half). Although motorways carry around 21 per cent of traffic, they only account for 5.4 per cent of fatalities and 4.7 per cent of injured casualties. - See more at: http://www.racfoundation.org/m... So 79% of the roads travelled are non highway, giving 94.6% of fatalities. Yes highways (or motorways) are much safer.

I first read it as the lorry was in a 2nd lane and moved into the tesla lane trapping the car in the middle as it moved lanes. If indeed the trailer was jack-knifed across the road then there is little the car can do, the radar would see right through the gap. It points to trailers requiring the side rail protectors, then the radar would potentially spot it.

This death happened in the area of the car Tesla spoke of the test machine breaking during a crush test of a roof, apparently withstanding the weight of 4 cars on its roof. A Trailer moving sideways crushing the car, you would think if the roof was super strong the car would be pushed sideways, instead of going under.

"the first known fatality in just over 130 million miles where Autopilot was activated," while a fatality happens once every 60 million miles worldwide. Autopilot is only allowed on highways, whereas I am sure they are comparing 60 million miles against normal driving which is inherently more dangerous than all cars heading in the same direction with barriers between the traffic flow. Apples and Oranges.