Apparently the driver decided that the tram is not a hindrance to him, You can see the result inside the post.
Hummer is a sport utility vehicle sold by General Motors. Hummer are designed on a platform derived from a military vehicle called the High Mobility Multipurpose Wheeled Vehicle (HMMWV), usually called a Humvee. The original H1 is essentially a military truck. Newer consumer friendlier models the H2, H3, H4 have more luxury interiors- but are still rugged vehicles.