1. Los Angeles has developed in a low-density, sprawling pattern.
Basically true, if you consider that ‘Los Angeles” is usually taken to mean everything from Pasadena to Santa Monica, and Irvine to Ventura. If you mean the actual city itself, not true.

2. Los Angeles’s air is choked with smog.
Again, with the caveat of LA meaning the entire Basin, sure seems true.

3. Angelenos spend more time stuck in traffic than any other drivers in the nation.
Don’t think so: Chicago? NY? DC?
4. Thanks to the great distances between far-flung destinations, and perhaps to Angelenos’ famed “love affair” with the car, Angelenos drive considerably more miles than most Americans.
Again, could be how it’s written: lots of Angelenos don’t have a car.
Overall, I don’t think so.
5. Los Angeles is dominated by an overbuilt freeway system that promotes autodependence.
No-one who lives here would call the freeways “overbuilt”. But, if i don’t live downtown, the car is a total neccessity, unless i want to spend the day on Metro. I grew up in Rome, IT and NYC and would gladly use transit, but from Pasadena to anywhere it’s not realistic unless you have to. So 1/2 true?
6. Los Angeles’s mass transit system is underdeveloped and inadequate. I vote yes. But I include the whole basin as a regional issue, not just downtown, where transit is actually adequate.

Can’t wait to see the “actual” results.