My point is that this discrepancy has, in the real world, proved to be a huge public health problem. And we are not talking about mileage. We're talking about

My point is that this discrepancy has, in the real world, proved to be a huge public health problem. And we are not talking about mileage. We're talking about NOx that produces O3. See also nearby: https://news.ycombinator.com/item?id=10364933 https://news.ycombinator.com/item?id=10364933