The obesity of software/cars

Just the other day I read an article about how the average size and weight of cars have increased significantly in the past 60 years, both in Germany and the US.

I have a screenshot (in german):

I wonder whether there is a common reason, for why both software and cars seem to undergo "bloating" right now.

Maybe, it is because we live in a time where we don't appreciate making efficient use of resources anymore.

But maybe somebody has other ideas?

So what's it got to do with this community?

I wonder, whether, if we find an efficient solution to the obesity of cars, maybe that would lead to an efficient solution against software bloat as well?