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Well, I think the tram is still too small (and knowing the Berlin Tram very well !) - anyway it gives the feeling of an off-hours-Rambo with his cute weapon. But maybe that's what you wanted, to play with visual irony

Imagine him standing up. His head would be out of the window area. Now if that is the effect you want, you should open the scene with him in standing position -- then he sits down.

Slowtiger,
Melbourne has trams (since the 1880's). They can go in circles where predetermined.
Your short scene is predictable, so what follows must entertain, inform, confuse and/or surprise.Or change the business.
Jules

predictable ... ?
as if you know what's happening in the following sequence ..

I don't, but you have set the tone. And I no longer care about the character.