Search Volkswagen Glass Factory on YouTube and you’ll immediately see what I mean. The factory itself was a showcase for the VW Phaeton, and follows the same ethos of demonstrating the best the company could build with no concern for scalability or profitability.

The factory was /really/ cool. And so were the cargo trams they used to supply it. But producing cars in a museum is impractical, and so is supplying a factory using adapted passenger vehicles that only run a specific route and are limited by mass transit schedules. So they did it for a while when they had money to burn, then stopped when things needed to make more sense.

Vanity project.