The Family/Personal Business segment is the killer and it comes directly from zoning laws mandating total separation of residences and shops.  It is impossible in suburbia to walk down to the corner store to buy a pack of cigarettes ... or anything else.  There isn't any corner store.  Even to buy a packet of pins requires a car trip.

Want to take your kid to the park?  Get in the car.  

Catch a movie in a theater?  Get in the car.

Do anything other than sit on your fat ass consuming TV?  Get in the car.

The US has been malled to death by idiotic land use patterns, enforced by zoning laws.

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre