The real problem with cars is they directly kill 100's of thousand people and people waste 100's thousand lifetimes worth of mindlessly driving them around EVERY single year world wide. They also cost of resources and environmental costs to build, fuel, maintain, and create roads, but so do all their replacements. We can have different trade-offs when it comes to those costs but massive transportation networks are always going to be expensive.

I have always thought the future would have personalized self driving subway cars. But, it's all about what you value.