I know Audi is planning on supplemental electric power for turbochargers but this is the first I've heard of an electrically powered supercharger.
https://gaadiwaadi-com.cdn.ampproje...ed-on-s1000rr-images-leaked/amp/?amp_js_v=0.1
https://gaadiwaadi-com.cdn.ampproje...ed-on-s1000rr-images-leaked/amp/?amp_js_v=0.1