Google, the search engine, technology and media multinational whose products and enterprises have become ubiquitous in the conduct of modern life, finally has a redundant piece of Sydney transport infrastructure to call its own.

At 10.15am on Wednesday, a crane began the process of winching two carriages salvaged from Sydney's one-time transport system through a window in the building Google now shares with Fairfax Media.

It was a tight fit. It is understood the carriages had about 20 centimetres of room to spare as they were eased through the open window and onto rollers.

The cost of transporting and installing the carriages is estimated to be in the region of $250,000.