On Monday, 25 November 2013 20:31:26 UTC, Bill wrote:
In message , "Dave Plowman (News)"

writes

In article ,

Nightjar wrote:

On 25/11/2013 13:13, Dave Plowman (News) wrote:

In article ,

Bill Wright wrote:

So all the people waiting to board the most environmentally damaging

form of transport known to man



Are you absolutely sure about that? Per passenger mile on a modern full

aircraft?



You do have to look only at first class passengers on a long haul flight

to justify the claim. According to DEFRA, those passengers are

responsible for 322.3 gms of CO2 equivalent pre passenger kilometre

(gCO2/pkm).



The averages for aircraft a

Short Haul flights 95.9 gCO2/pkm

Long Haul flights 110.4 gCO2/pkm.

Domestic flights 163.1 gCO2/pkm



For comparison, some other figures a

London Underground 73.6 gCO2/pkm

Local London bus 86.3 gCO2/pkm

Tyne & Wear Metro 103.6 gCO2/pkm

Hybrid cars average 139.0 gCO2/pkm

Local bus (outside London) 185.9 gCO2/pkm



Electric cars, charged from the mains:

France 12 gCO2/km

UK 75 gCO2/km

China 115 gCO2/km

Note this is per car km, not per passenger km



Notice you've missed out ordinary cars. Over 400g per mile.



You must be on a higher social plane than me. My diesel estate is listed

at about the same as the hybrid cars average in the list, and I bet it

will carry more junk with more legroom for the passengers than any of

the hybrids I've seen.


Don;t they usually 'fake' the stats by using cars without brakes or proper clutches so they get the best figures for mpg amonst other things, I've heard they even take out all the seats except the drivers to get the best result.
They certainly don't test using real driving conditions such as on road that aren't 100% straight woithout hills or dumps or stops at lights etc...

Wouldn;t suprise me if they drove them in a vacumm container in zero G simulation, I just hope I've not just given them a new idea ;-)