Anybody know who this is? Toyota team (driver)?

[sahajesh]

This cheerful guy was signing autographs but for the life me, I can’t say he’s one of the drivers.

[MissChief]

Kazuki Nakajima maybe?

https://toyotagazooracing.com/wec/drivers/2023/

[RL17]

Looks like him - he was driving on test day

[SamWeaver]

Have you found out who is he?

[sahajesh]

Didn't find out - he was signing stuff after the race in the pit-lane and I got a selfie, but no idea who he is!

[paulyv]

Yes, that's Nakajima.