I went and saw the Petite Le Mans when Peugeot won in 2011 and I think I'm going to the real Le Mans next year. I want to walk around the paddock and see those beautiful monsters in person.
Go to the Drivers Parade in the city centre and get their autographs, then see all the cars in the open pitlane walkabout on the Friday. Tremendous access for the money.
I'm curious if all that savings was from batteries alone or if they also moved from Silicon to SiC or GaAs for the inverters and other electronics. I've seen some new specs where they say they can cut down the weight/volume of the electronics by 50-70% and boost the efficiency up over 98% as well as reducing a huge chunk of the cooling needed because they generate less heat AND they can run at higher temps anyway.
That's one hell of a combination of win/win/win/win for racing so I'd be surprised if they haven't already done at least some use of SiC or GaAs.