Which parts of the pie are that?

11.9% is a pretty huge percentage. If it were like 0.1%, I might agree with you.

Imagine you were tight on money and then think about your grocery store bill. Wouldn't you try to save in all categories, even though, say meat, was "only" 11.9% of your total bill?

Carbon reductions need to be made in every sector.

> Don't you think it's better to focus on other parts of that pie, where it's easier to implement widespread savings and change?

I looked at the link and to me transportation does indeed seem one of the larger sources of emissions. Everything else seems either very fragmented (lots of entries with around 2%) or similarly if not more complex - like energy use in buildings for all of the appliances.

What am I missing here, what would be easier to address than the abundance and types of cars and possibly the lack of proper public transportation?

I don't think that one can even make the argument that we should look for easy wins when change is necessary everywhere, unless we want climate catastrophe - because of people working against improvements due to their personal interests, inefficiencies in regulation and enforcement, as well as any number of other factors.

We are already moving our electric grid to renewables. Wind and solar are both cheap sources of power, and have a lot of potential to account for more of the electric load. Putting electric on renewables, plus switching cars to EVs (charged by renewables) should eliminate 50% of that chart - and this is something we can pull off in less than 20 years. Some of the other 50% is also easy to switch to battery powered, but they are all small niches that each need to be worked on separately. (If you are in one of those niches please think about this!)

You could pick any part of the pie and make an identical argument, yet somehow the whole pie has to go away.