[circlecity]

“Driving to fast appears to be the cause,”

Then why were there no skid marks?

[nascarnation]

With all the electronic safety systems on board now (anti-lock brakes, stability control, traction control, etc and this fancy new rig had a full complement of them) how much wheel skid marking actually occurs?

[linMcHlp]

Correct.

Not driving that fast, but slammed the median - broke thru some of the guts - including power steering cooling - of the engine area (lower).

Might have been - while bouncing along - not accurate with foot to pedal placement and hit both brake and gas or only gas, for a moment.

Continued to western curb of southerly lane and that curb plus immediate terrain led to a series of tumbles.

My guess.

[Deo volente]

He hit the median and at the speed he was going all hell broke loose. The car tumbled over and over for almost 500 feet, then up a hill before resting on its side.

[Ol' Dan Tucker]

Then why were there no skid marks?

He probably hit the gas instead of the brakes after he hit the island and accelerated into the side of the hill.

[ratzoe]

Then why were there no skid marks?

Typically the absence of skid marks means the the driver was distracted (texting).

[CodeToad]

“Then why were there no skid marks?”

Since when is too fast going to cause skids marks? Duh.