No steering wheel or pedals must mean the operator operates the door? "Quelqu'un doit sauter!". (This may not be funny in two languages.)

As a French, reading this I immediately understood this as "Somebody must blowup!", which I think wasn't the intended joke...

Someone has to jump? Je ne comprends pas. C'est un métaphore?

Well, there is another tram alternative: the bus on a separate lane, like in Nantes.

Paris also has specific bus lanes now everywhere.

Nantes' Busway isn't just separate bus lanes though, they get the same level of priority as a tramway, they run straight through roundabouts and other intersections, with lights turning blinking red for cars when the bus approaches. They also stop at every stop unlike regular buses (and they mostly use elevated platforms so there isn't a step to get in or out, IIRC).

An example of BRT - there are quite a few of them now: https://en.m.wikipedia.org/wiki/Bus_rapid_transit