the website Information is Beautiful calculated the volcano has emitted about 15,000 tonnes of CO2 each day.
15,000 x 6 days = 90,000 tonnes
90,000,000,000 grammes
2000 km travelled, so 90,000,000,000g / 2000km =
45,000,000 g/km
Well, that puts my cars
219g/km into perspective and I've not used it for a few days!