They've gone silent now that they are committed to the construction of a vehicle that will break the land speed record (for stirling engines).
The part that I find so fascinating is their pursuit of elliptical gears. The approach they essay makes one long for a Wire EDM machine.
The only thing this has to do with Q is The Stirling Powered Rotissere aka The Chicken Flinger
Now that's putting waste heat to good use.