How exactly is it unsustainable? Are we running out of something? Are we running out of electricity?

The idea that cars are unsustainable is ridiculous. Just because they may not fit into sonmeone’s desire for increased government control of mobility doesn’t make them unsustainable.

Every generation seems to think their generation will be the last, unless we “do” something. They were likely debating horse carts in England a thousand years ago with equal fervor.

> Are we running out of something?

Yeah, money. In the US, new transportation projects are generally financed with federal help, while maintenance is left to the local government. This essentially creates a Ponzi scheme, where cities are going bankrupt due to depreciation on infrastructure, and not even realizing it. https://www.strongtowns.org/the-growth-ponzi-scheme/

In my opinion, roads are essentially underpriced. They're expensive to maintain and given out for free. (Similar arguments apply for parking, expressed humorously here: http://cityobservatory.org/parking-where-we-embrace-socialis...) This bothers me, as someone who doesn't own a car but lives with worse air quality and safety due to those who do.

Call me when all cars are electric and all that electricity – not to mention the batteries and everything else – is produced by sustainable means. Burying your head in the sand and figuring that someone is going to solve the problem at some point does not work. Never mind all the people who want to believe the problem doesn't exist in the first place, in order to maintain the belief that their lifestyle is fine.

We are running out of drinkable water, breathable air, ice in Antartica, corals at the Great Coral Reef, mineral oil.