I think there's one in the states that works. The one at Hendon is apparently cobbled together from bits and was originally fitted with anti tank guns.
Most Stukas were destroyed after the war, either by retreating axis forces or those who found them. The same is propbably true for rather a lot of interesting machinery.
The automatic thing for pulling you out of a dive might be handy for the inpept PPL trying to recover a spiral dive without knocking the weathecock off a church in Bedfordshire.