Thanks guys, the name "E-RAM" was just at the tip of my tongue and bothering me all day
I also like the Porsche 9R9 approach of exhaust-driven turbine for energy recovery. I guess it's MGU-H minus the M. I think it goes nicely with the rest of the hybrid system, and very road-relevant. I remember looking at this photo for the first time and thinking, where the heck is the upper exhaust line going?? For Tervuren, this one I believe they call Abgasenergierückgewinnung or AER