The Honda rider was traveling at such a "very high speed", his reaction time was not sufficient enough to avoid this accident. Swedish Police estimate a speed of ~250 KM/h (155mph) before the bike hit the side of the slow moving car at an intersection. At that speed, they predicted that the rider's reaction time (once the Volkswagen came into view) wasn't sufficient enough for him to even apply the brakes.
At 250 KM (155 mph) the operator is traveling at 227 feet per second. With normal reaction time to SEE-DECIDE-REACT of 1.6 seconds the above operator would have traveled over 363 feet while making a decision on what actions to take. In this incident the Swedish police indicate that no [such] actions were taken.
The car had two occupants and the bike rider was found INSIDE the car with them, along with the motorcycle itself. All three involved (two in the car, plus the rider) were killed instantly.
The Volkswagen actually flipped over from the force of impact and landed 10 feet from where the collision took place.