It might not be that negligible--in the US alone there are were half million or so diesel VWs sold since 2009--if they are really spewing 40x the limit, then we

It might not be that negligible--in the US alone there are were half million or so diesel VWs sold since 2009--if they are really spewing 40x the limit, then we're talking emissions equivalent to almost 20 million cars that do meet the limit. This is around 1 to 2 years of total new cars sales, or roughly 10% of the active light-duty vehicle fleet in the US.