You don't think I grasp the concept of physics. That is funny. Please explain your "size is a term for space and time" comment, it makes zero sense.
fyi-
Physics is science that involves the study of matter and its motion through space and time. Yes, size matters. Especially today in the world of "crumple cars" unibody which does not sit on a frame. It's physics when a compact car explodes when it makes contact with something solid. Everything is focused on less weight, more mpg. Ideally size would not matter if the material being used would completely stay together.
Ford Focus crashing at 120mph-
http://www.gamedots.mx/media/gd/crash_carses.gifWhat? Where are you going with the Tesla statement?