Ford finally owns its own logo again. Why was it gone, and what did it take to get it back?

What do you do when the trusty 5 cylinder diesel in your 1981 Mercedes 300TD finally requires a replacement? While most people would probably find another Mercedes diesel and enjoy several hundred thousand more miles of relatively trouble free driving, the builder of this unique Benz had an entirely different idea.

In 1966, Henry Ford II asked famed graphic designer Paul Rand to update the Ford corporate logo. This is what he came up with. Why didn't it take?