Actually, I just don’t think there’s any good way to make dense, vibrant cities coexist with huge numbers of cars.
This just isn't true. All dense, vibrant cities have huge numbers of cars. The balance just needs to be changed a bit, and other options provided. Urban policymakers need to understand that car-centric policies will work against the creation of vibrant cities, and they should scale back things like parking requirements, but don't worry, the cars we will always have with us...