Aluminum has a finite fatigue life. That doesn't mean it will fail one day after it's expiration date. Different alloys have different characteristics and their strengths age at individual rates.
Some day it will fail under load. Chances are good that a properly designed structural aluminum for a car will out last the owner of the vehicle.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
