What's The Most Ostentatious Car Upgrade?

The Brabus 850 Bi-Turbo iBusiness has a starry night headliner. It has gold tubing in the engine. It has iPads and it has an iMac. It is definitively ostentatious. Can you top it?

In terms of lux, what's more lux than gold heat sheeting in the engine that no one who isn't a mechanic is ever going to see? Does it work, sure, but is it worth the extra money? Unlikely.

BTW, the topshot and this QOTD was inspired by this reframe from FRONT.

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