Pretty interesting engineering going on with those wheels...
"At top speed, the tires are fighting against 5,442 Gs of force, and they can only withstand this for 15 minutes before failing."
They're using the Michelin PAX system where they actually glue the rubber to the wheel. It has a poly and rubber insert to keep shape and absorb the road.
Also they probably ran out of fuel at the end of the video.