I'm assuming that those are Toyota TS050 Hybrids.

Not tagging as such untill I can find some confirmation though.

Yes, this is celebrating Toyota's victory at Le Mans this year. The cars are going through the Ford Chicane towards the finish line.

6point72 said:

Yes, this is celebrating Toyota's victory at Le Mans this year. The cars are going through the Ford Chicane towards the finish line.

I assumed so but I can't read moonrunes so its still a educated guess as far as I can say.

FWP said:

I assumed so but I can't read moonrunes so its still a educated guess as far as I can say.

I can't either, but according to Google Translate the title is "Memorial of Le Mans in 2018."
The cars are also running the 2018-19 spec bodywork and livery revisions - the 2016 and '17 cars had a red nose with smaller, lower buttresses painted black, and different patterns on the dorsal fin.