That's such a nonsensical argument. Suburbs weren't designed for elephants, they were created for humans, just like cities. You want to alleviate the dependence on cars in cities, make public transportation as convenient and flexible as having a car. Oh wait, you can't. People have cars because they do provide a perceived benefit, otherwise people would choose the alternative in droves.
Maybe you all should create a pedestrian-only city and live happily ever after.
There is no choice but to build cities in this car-dependent way. Cities are forced to do so by our legal system that has been influenced by the automobile manufacturers and other industries.
Instead of me digging up some citations, just go watch Roger Rabbit. This has been the story for many years.