Thucky: Re the streetcar thingy:
http://www.straightdope.com/columns/read/551/did-general-motors-destroy-the-la-mass-transit-system
Relevant quote:
"Now, you may or may not believe GM's professions of innocence concerning the holding company. But most authorities agree that trolleys bit the dust in LA and elsewhere not because of a conspiracy but because they were slow and inconvenient compared to autos, and in the long run just couldn't compete. Los Angeles is typical in this respect. It has neither the high population density nor the concentrated downtown necessary to support rail transit. The PE, which was owned by the Southern Pacific railroad, made a profit in only 8 of the 42 years it was in business under its own name. The problem was exacerbated by the fact that many PE lines in LA proper operated on city streets, and as more cars crowded those streets, service got progressively slower. (The average speed on the run to Santa Monica was only 13 MPH.)
Buses were looked on as the transit industry's salvation because they were cheaper to operate and maintain than trolleys, with no tracks or wires. In fact, the PE had begun to convert to buses in 1917, and had changed over 35 percent of its system by 1939. A state commission in the late 30s urged that busification continue, and by the early 1950s most of the tracks were gone. The last line gave up the ghost in 1961. It's too bad — some think the PE could have been the nucleus of a decent, if heavily subsidized, modern rail system— but blaming GM is like blaming the inventor of gunpowder for war."