It's a Diesel Bus Trackless Trolley Rubber Tired Monorail Tram!

Just stumbled upon this tonight. Interesting contraption.

https://www.youtube.com/watch?v=Kr4EZwZ ... mTraveller

Titled link: Why Nancy Is Scrapping Its Magically Bonkers Monorail-Bus-Trams - YouTube

The monorail part is a central guide rail that the vehicles use for most of their routes, though the Nancy ones run for part of their routes without the guide rail as an electric trolleybus.

Bombardier Guided Light Transit - Wikipedia

Guided Light Transit (GLT, French: Transport sur Voie Réservée or TVR) was the name of guided bus technology and associated infrastructure designed and manufactured by Bombardier Transportation (now Alstom). It was installed in two French cities: Nancy and Caen. The Caen system was closed in 2017 and replaced by conventional trams,[1] while the Nancy system was closed in March 2023 and is to be replaced by trolleybuses.[2]

The Translohr - Wikipedia system is a similar one, but more widely used. It and the GLT / TVR are Rubber-tyred tram - Wikipedia

Great video! In Nantes we have a similar system, consisting of 3-cab electric buses on dedicated tracks. The differences with the TVR are the buses run on batteries instead of a power line and there is no rail either. Instead, each station has a supercharger above the track the bus connects to during stops to get a small recharge.
We also still have the oldest modern trams but those will be replaced soon by modern ones.