He would have to be going substantially faster than 90 km/h. Yes, that's the last speed recorded by the speedometer, but doesn't necessarily indicate the speed of the first impact. It would take a much greater speed to create that much damage. Also, nobody drives at only 90 km/h in Portugal!
These are disturbing pictures though. Portugal has really bad death rates on the roads, but the highways are very safe, and they drive incredibly fast there too.
"it's kind of like an Airbus, it's an engineering marvel, but there's no sense of passion" -- J. Clarkson re: Coxster