Regardless of whether the answer is yes or no, there are any number of further questions! If the answer is no, we don't need to answer any further questions, because it is only a matter of time before the value of the share is 0. If the answer is yes, there are many other questions to answer (but this later in other questions).
My thoughts that the thing is working:
A: The best confirmation that the thing works came from ‘Oberdrautaler Transporte’.
i: public statement in local newspaper
ii: I had asked directly at ‘Oberdrautaler Transporte’ and received a positive answer.
other hints that it works:
B: they sell a few pieces (but mainly to the mining sector: is Sprot involved there?)
C: TV, Emitec, Semperit have confirmed that the part works. (but what happened to that?)
and not working:
A: the hole dynacert story (Mosolf, MOU's without aftersales, ......)