Not a bad bit of having a real electric car getting some exposure to the masses.
Unfortunately, David Letterman has some laryngitis and helps perpetuate a few of the common myths/fears that people have about electric cars.
Dave also didn't have much good things to say about the Volt's range, even though it's more than 30% longer than the average American's miles driven per day.
All in all, still worth watching, including seeing the Tesla S car itself very briefly at the end.