Sirius XM Radio's third quarter results are in: a stupefying $4.88 billion loss. The biggest chunk of that is an impairment charge due to a drop in stock price. Slow auto sales have reduced the number of new customers. This is worse news for me than AAPL taking a dive — I'm not a shareholder, but XM Highway 16 is one of Valleywag's raw ingredients. If satellite radio dies, it'll be like those dark years when the government barred Detroit from building convertibles.

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