4 ms·Yeah, car washing, a business that is infamous for its enormous externalities...by raincole 3y agoYeah, car washing, a business that is infamous for its enormous externalities...gwd 3y agoHaving a slab of asphalt in the middle of a city instead of something more useful, like an office building, shops, or a block of flats, is a negative externality.guappa 3y agoYou can only have so many cafes in an area… People won't drink more or buy more.