A crash is "the collective noun used to describe more than one rhinoceros." A rhinoceros can see only 30 feet ahead of itself, so when a herd of them begins to run, they have no idea where they are going, where they will stop, or what they're going to do when they get there. In fact, running at 44 feet per second, they can't even see a second ahead of themselves.
What an awesome picture of what it is to be followers of Christ. God seldom shows us what’s ahead. He just asks that we give everything over to Him and trust Him completely.