The German Post designed the Streetscooter a while back which is an electric delivery van. They also claim "zero fine dust driving". But how does that work? It

The German Post designed the Streetscooter a while back which is an electric delivery van. They also claim "zero fine dust driving". But how does that work? It is quite hard to have a fully closed system so no particles can escape. Well, their solution is quite clever: They are filtering the air in general, so can also consume particles emitted from other cars, even when the vehicle is not moving. So they could even get to net negative fine dust emissions :) https://www.dekra-solutions.com/2018/01/fine-dust-free-driving/?lang=en https://www.dekra-solutions.com/2018/01/fine-dust-free-drivi...