MikeB4: I have been overtaken when stopping for pedestrian crossings and over taken when indicating a righthand turn. I would say that the bike rider was too busy riding like a complete idiot with no regard to the safety of anyone around him. Doing 100Kmh in a 50Kmh zone is absolute stupidity.
The bike rider is the most vulnerable participant in this crash - if anyone was going to get killed it was them - so they'd first have to have no regard for their own safety and be trying to die for that statement to be true. People with no regard for others safety are more likely to drive something that offers a little insulation from the consequences of their recklessness such as SUV's with bull bars, not an unforgiving vehicle that amplifies the consequences or recklessness like a motorcycle.