A rapid loss of air at freeway speeds can cause that. It'd be interesting to have a full photo of the entire tread to see if a puncture occurred in the tread or perhaps in the sidewall/shoulder, however, with that much damage to the tire's sidewall it'd be pretty difficult to determine that.
Also, unless it's the lighting, it appears the wheel is bent. Not impossible, but if the inside sidewall already had an impact break, doesn't take much at that point to make the impact break 'leak' from a puncture. I can barely make out a 35 series 18" tire with a 86 load index, SL