How's Your Mechanical Apptitude

It has been a little heavy around here recently, so I think we should lighten things up. While lighter in subject matter this will still cause a few more wrinkles in your brain. Take a look at this mechanical aptitude test that was developed for budding Ford diesel mechanics. It is fifty questions long, so allow yourself enough time.
I will warn you though, it is fun and frustrating at the same time. But, I passed! Got an 86. If you take it, I would love to know what you made.