This is not new technology. Most elemental calcium seen in motor oil analyses comes from over-based calcium sulfonate. The calcium is in the form of calcite nanoparticles and is present in an excess to yield a high BN additive which, in turn increases engine oil BN by the treat level percentage of the additive BN. For example, the addition of 1% of a 400 BN OB calcium sulfonate increases engine oil BN by 4. Typically, OB calcium sulfonate with BNs of 400 are used. The calcite does have both anti-scuff (formerly Extreme Pressure) and anti-wear capabilities. I've never seen reference to it having a low coefficient of friction which would improve gas mileage and possibly horsepower but it may have this potential as well. As I said I don't know.
This is also the same technology to produce calcium sulfonate grease which has excellent natural anti-scuff without the use of additional AS additives. The thickener is the AS additive.