The following map is from the Center for Neighborhood Technology, which created the Housing + Transportation Affordability Index. As you can see, lots of housing in LA can be rented for less than 30 percent of median household income (everything you see in yellow). Transportation costs for the median household, on the other hand, exceed 15 percent of household income for nearly every census block group in the city. We talk a lot about housing affordability, but transportation affordability is where we're really failing our residents, and it's a direct consequence of being so heavily reliant on cars for getting around the city:
Zooming out, we can see that things don't get any better in the rest of LA County, and—no surprise here—transportation is super-expensive throughout Orange County as well:
Compare that to New York, where it costs very little to get around in large parts of Manhattan, Brooklyn, and the Bronx, as well as in Jersey across the Hudson River: