Fortunately there is a sequel to "Who Framed Roger Rabbit?" in the works. Since the first movie used Bradford Snell's false and damaging argument that there was a grand conspiracy by General Motors to destroy transit in the United States as a main plot point, let's speculate on better urban frauds the new movie can incorporate into the story.
Perhaps the new movie can have a villain who claims that streetcars cause economic growth, leading to hundreds of millions of dollars of federal subsidies funneled to the villain's business holdings. Here is a link to some top secret test footage of an early draft.
Here is the key scene from the first movie where the dastardly plan is described: