Segment 1: What's up with demolition derbies? Americans have been intentionally ramming cars into each other, for sport, since the 1950's. Learn about the Midwest's Colosseum and why the old school demo derby may be running out of gas. Frank Morris, NPR correspondent and senior editor, KCUR Segment 2, beginning at 22:46: Yes. Even if you're a Midwesterner, you still have an accent. The Midwest has a reputation for being a bland, neutral, accent-free place. But experts say that simply is not true