My expert opinion: Probably will never work.
Their "pump" is a tube between the tire tread and casing. The "pumping action" relies on tire contact patch deformation to squeeze air through the tube.
Squeezing a tube is a very crude mechanism to try to get several atmospheres of pressure, even in the best situation. I seriously doubt they can manage it in a tire.
Then there's the reliability/safety issue of putting a flexible tube between the tire casing and the tread. No thank you.