The Long and the Short of it.

[tavarish]

1- Car is a word in the English language
2- Words are verballizations of concepts used for communication
3- concepts are used to identify observances in our reality
4- Car is in our reality as a concept

You'd have to have another list for it's physical properties... how would you do that for the immaterial?

A concept is immaterial, as you just listed. You can apply different demonstrable elements to make a cohesive argument. However, every one of the premises have to be true and internally consistent for the argument to be plausible.

I'd make an example, but I don't want to put words in your mouth.