The surveillance video also shows the car driving at extremely high speed. Indeed, with a little work you could probably id the location and model of the surveillance camera and extrapolate the speed data from the footage. I don't find this especially convincing of anything new - cars don't blow up at the drop of a hat nowadays, but if you crash one fast enough explosion isn't an especially remarkable outcome.

Offhand that looks to me like 70mph+. I haven't done any measurements, and am just relying on my film industry experience, which has naturally entailed watching a great deal of footage from a variety of cameras over many years. I could be totally wrong.