All correct but you forgot a few details from that list A lot of interior space reduction for a given vehicle volume comes from the space required for a passen

All correct but you forgot a few details from that list A lot of interior space reduction for a given vehicle volume comes from the space required for a passenger cabin to have an aerodynamic shape. More "wasted" space leaves more room for crumple zones, airbags, speakers, computer modules, HVAC stuff, alternative drive-trains and all sorts of features throughout the car. Basically every engineering group in an OEM has their job made easier by making the car bigger. Making the new generation 1" bigger than the last generation is an easy way for management to please basically all the stakeholders. Vehicles at the compact end of the spectrum are moving toward the design characteristics of 1950s heavy equipment where the operator sits where he fits and that's it.