First conceived in the early 1980s, the P-car was GMs attempt at making a supposed sports-car for the masses; arguably, they didn't fail--completely. Rather than build a genuine sports-car, GM built a sporty-car that happened to get somewhat decent fuel economy. But more importantly than that little disclaimer, is the Fiero helped Pontiac earn its driving excitment in a way that hadn't originally been planned.
Since the Fiero is mostly fiberglass and the body is made up of composite peices, the car is a popular donor for almost any sort of kit car imaginable; from Lamborghini knockoffs to GT40 knockoffs, Pontiac's little economy car with sporting pretensions started a fad that would be insanely hard to ignore. Even thirty years after the car's on sale date, people are still hacking up what's left to make a replica of a car they'll never afford.
These cars are almost guaranteed to have a cult following for years to come. I just hope there's enough Fieros left to see one as the years roll on. I am almost certain that stock Fieros could be the next big "legend Pontiac". We'll just have to wait and see.