It depends which dangers you consider. Danger of death do to automobile collision? Danger of death due to heart disease? Danger of death due to either automobile collision or heart disease?
It's difficult to say what the risk of death is due to automobile collision for cyclists because it's difficult to say how many cyclists are out there. Motorists are easy to count because they need to register. Cyclists are hard to count unless they are dead. More bicycles were sold than automobiles in 2007, yet we all know that there aren't more cyclists than motorists on the road.