How realistic is the "carbon revolution"?

How realistic is the "carbon revolution"? « 3E Intelligence

One of the most fascinating finds of the study is that the world sustainable level of per-capita emissions lies at 2.2 tonnes CO2e per year (or 6 kg of CO2e per day). Currently per-capita emissions in the EU-27 are at 9.6 tonnes (US 21.5 tonnes). This daily “emission budget” (which we need to reach if we want to stick to “safe” levels according to McKinsey) would mean we would have to choose between the following alternatives: doing a 20-40 km car ride, 10-20 hours air conditioning, buying two new T-shirts (not including the drive to the shop) or eating 2 meals a day. Challenging enough for you?