There’s a video out there (below) that purports to be footage of footage from a surveillance camera which just happened to record the crash that killed Michael Hastings.
Assuming the video is what it says it is (I wish the camera person had captured the time/date in the frame), it appears to be pretty clear evidence that Hastings was going crazy fast (100 mph I’d guess), tapped his brakes too hard which severely upset the car’s balance (b/c of how fast he was going), and instantly careened into a curb and tree.
Now, you can’t see the car’s balance being upset, nor can you see it crash, but you can see what I’m 90% sure are the brake lights coming on, then the light from the initial impact (hitting the curb and then a tree – which I assume ruptured the gas tank), and then a large flash of light which I believe is the (rapidly vaporizing) gas from the ruptured fuel tank igniting.
I also think the video rules out ECU tampering b/c of the fact that his brakes appear to have been working. If the ECU was hacked, the brakes would have most likely been disabled.
Also, the explosions at the end of the video are fiery explosions like you’d expect from a gasoline fire, not the violent, high velocity (and thus virtually flameless) explosion you’d expect from a tactical explosive.
TLDR: Assuming the footage is genuine, Hastings was speeding like crazy on an empty urban street, very late at night, hit his brakes too hard, instantly upsetting the balance of his car, thus smashing into a tree and exploding which is a common occurrence in such a violent collision, (probably) even in a brand new Benz. This is also the most parsimonious explanation.