Oh of course I'd be upset! (I don't have a car, but will entertain your theoretical scenario.)
If someone stole fruit from my tree I'd be upset too!
If someone stole fruit from my tree I'd be upset too!
First: A car can be "the means of production", if you're a driver for Uber/Lyft.
Second: the issue I understand is that this website isn't letting one person take fruit from a tree, but treating all such things as open invitations for all persons to take from the tree. To your analogy, that isn't taking a single Model T car, but seizing the factory and stating you're making cars for the entire city with it.