Once you've got the exterior and powertrain worked out, you'd be able plug in 114 Fiat-Chrysler accessories. Parts include replacement seats (including a US-illegal front baby seat), cup-holders, head rests, seat cushions and a sound system. The dashboard has small holes that Fiat relates to Lego, making it possible to use non-car accessories like Bluetooth speakers, camera mounts and smartphones, which is kind of a genius idea.

Fiat also had the strange thought that you could put digital messages on the back bumper and possibly lease it out to companies to display ads. I guess that could make you some cash, but such it seems strangely contrary to the rest of the egalitarian concept.

Fiat sees the modular idea as a way to become the Amazon of plug-in car options. "So, this is a new business model for automotive accessories, enabling them to be resold or traded on the Web," it said in a press release. "This new business model is focused on e-Commerce, the virtual market that knows no boundaries."

We've seen other concepts like Renault's EZ Go aimed at democratizing transportation, but some of the Centoventi's ideas -- like rentable batteries -- actually seem feasible for a production car. Fiat didn't say whether it would ever be commercialized, but hopefully the company will continue to at least explore and develop some of the very novel ideas.

Follow all the latest news from Geneva Motor Show 2019 here!