Yeah that’s a very typical spread of travel times. There’s very few cities in America where a majority of trips are not best served by a car. Even cities like SF and Chi which ostensibly have good public transit, mostly have what I would call “downtown shuttles”. Any trip to the CBD is pretty reasonable by transit, but most trips both in the city and greater region are by bus which are by definition slower than a car.

Cities oriented around the car (even relatively dense ones like LA) are very difficult to adapt to transit because there are no logical nodes at which to place the transit.