SQ7 Electric bi-turbo
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TT Clubsport Electric bi-turbo
Both of these use a separate 48V electrical system for the turbo IIRC.
I saw a precursor to this about 15 years ago. It was the compressor side of a Powerdyne supercharger (ie turbo compressor) built on to a small but powerful 3-phase motor. It had an inverter the size of a car battery and power cables as thick as your thumb
It was originally intended for truck engines I think.
Magnetti Marelli showed a potential OEM version of the heat recovery system used in F1 at the Autosport show a couple of years ago:
11th September 2017, 12:49 PM
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