Wow.
The Lede from the New York Times has the details:
On a stretch of road by the crest of a hill in Logan, Utah, on Monday, a motorcycle and a BMW collided, throwing the cyclist under the car and causing the bike to burst into flames, which quickly spread to the sedan. Rather than fleeing those two flaming vehicles, a dozen bystanders rushed toward the blaze, lifted the car and pulled the injured man out by his ankle.