zmodernizowane Englisch:

The beauty of elevated monorail-based systems is the relative ease with which they can be retrofitted into an existing urban environment.

Although it's "Mac OS X", that doesn't mean that the Mac OS code itself has been upgraded to a new version.

Why was the Japan Defense Agency upgraded to the Japanese Ministry of Defense?

This car has state of the art technology and it is the best on the market at the moment.