[morsch]

The overall consuming emissions contribution of the transport sector is at around 20%. The building sector (hvac) seems to be similar.

Cars are not efficient machines. The engine is limited to around 50% efficiency, the heat is wasted. And you're typically propelling 1600+kg of mass which is almost purely overhead.

[btcindivist]

Heating and cooling trumps the transport sector with 30%+. Globally, stuff does skew a lot from our first worldly habits.

If you do the calculations similar to those done in http://withouthotair.com/ you'd see your first worldly habits put your heating and cooling at the top, and probably your diet at the second place.

[Retric]

Energy use is not the same as CO2 production. Cars produce a lot of CO2 in the oil extraction, transport, and refining stages. Heating and AC use wind, solar, electric, nuclear, etc not just fossil fuels.

[icebraining]

So because transportation is not the top CO2 impact industry, no changes to it can have a substantial impact on the environment?

[btcindivist]

When profiling are we optimizing the fastest functions?

[LoSboccacc]

Transport sector is quite more than cars tho. Tankers especially are a mess.