[Tax-chick]

died Sunday after crashing at just under 300 miles per hour

Well, yes. One would.

Sad for his family and friends.

[Jeff Winston]

When they do stuff like this, they are pretty armored up. Surprisingly, it's possible for at least some of them to survive crashes at pretty high speeds:

In a previous event, a female rider had fallen from her bike at 211 mph, but survived with only minor injuries.

I wouldn't have thought it possible to survive a fall from a bike at 211 mph with minor injuries.