When Dr. House first takes a seat on the bus, it is a vintage GM model with air conditioning, and which therefore has a solid panel in lieu of a transparent rear window. A moment later after the bus departs, he is siting in the back seat of a different vehicle where the rear window is depicted as fully transparent.
House and Alvie stage a fight in order to get a pill of Haldol to trade with Hal for a phone call. In an emergency situation (such as a fight) Haldol would be administered by injection, as a pill would take minutes to absorb.
House and Freedom Master are shown at a air tunnel sky diving event, and are easily 30 feet in the air. In reality, you are only 4-5 feet off the ground at the outdoor sky diving air tunnels.
The bus Dr. House boards is a GMC "New Look" model from the 1970's. Though classic in appearance, such a vintage vehicle would have been retired long ago by any transit agency.