Helmets
For different types of sports, there are different types of protective gear. A lot goes into the football helmet on the right because it is much more of a contact sport than hockey, which is seen on the left. You don't want a brain injury in either one though, so just make sure you're donning one of these in either.
A Car Engine
This is just one type of engine, there are so many more that are just as totally unbelievable on the inside. This is what's sitting in the interior of your car, and it looks very confusing. You're probably better off heading to a mechanic who can help you figure this crazy thing out for good.
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