Yes I know. So I didn't look at any adverts. The article is full of
Bo****cs. Firstly, the car is hardly Swedish, that was a thing of the
past. Turbo charging a smallish petrol engine as a means of improving
efficiency is now much  more common these days, almost every manufacturer
have small engined turbo cars: VW TSI, Fiat T-Jet, Renault TCE; they're
all at it these days.

The idea that bio-fuel is "carbon neutral" is also suspect. Yes, I know the
standard green argument that because the bio-fuel comes from plants which
absorbs CO2, it doesn't add CO2 to the atmosphere.

But wait a minute...! Plants absorb CO2 from all combustion engines, not just
the bio-fuelled engines. The plants can't distinguish the source of the CO2.
The CO2 volume coming out of the exhaust of a bio-fuel engine is no less than
the CO2 from any other combustion engine. Since most engines run on non-bio,
it follows logically that most of the CO2 which is trapped by plants, is from
non-bio fuelled engines.

In other words, if the bio-fuel is claimed to be carbon neutral, then fossil
fuels should be assessed with a considerable CO2 discount, since the plants
absorbs CO2 also from that source.

Furthermore, production process of bio-fuel require high energy input; that
is CO2 from one source or another.