That's great. I hope wiper motors can take that kind of continuous actuation -- it's not really what they're designed for. I'm sure they'll stress test the hell out of it.
Driving for hours in heavy rain results in pretty continuous actuation of wiper motors. I'm far from a mechanic but I can't say I've ever heard of a wiper motor failing either. I'm sure they have real data on it instead of this handwaving, but as an outsider I would be surprised if it was an issue.
Not a comment on the ventilator made from a wiper motor, but I have had one fail, and had to have it replaced for something like $255.
All mechanical parts will fail (the antikythera device isn't still operational, but that's a pretty long-lived device!), it's just a matter of when and why.
That's actually really impressive. I didn't realize any of these efforts were that far along. It will be interesting to see how long certification takes.