Fully combine the two storage options?
"Of more interest is the Bosch system – also unveiled at PMSW - which comes in a mix-and-match form with both battery and flywheel energy- storage options – the latter spinning in a vacuum at speeds of up to 160,000rpm."
Battery's weigh quite a bit, weight is precious on F1 cars. I wonder if they considered using the batteries as part of the fly wheel?
Also good job they decided to use a world beginning with W as the last one for their acronym rather than one beginning with L