The order of the door opening depends on which reference frame one is in. Whether or not one actually put the relativistic cake in one's mouth to have performed the motion of eating the cake... is all relative.

Observe this table summarizing the results of some trivial calculations of rest lengths,

So, the car fits in the garage in the garage's frame (the car is and the garage is ). But, in its own frame, the car is much too big to fit in the garage (car is and the garage is merely ). Which frame is right? Relativity puts equal footing to either, and thus one shall never know. Be an agnostic, and one just might live a happy carefree life.