Did they just plug it in every 300 miles for 30 minutes, an hour, two hours? Did they have pre-positioned charging stations just for the run? Did they have the capability to quickly replace the batteries at logistically coordinated locations?
Not to be snarky but I have a history of professional endurance road racing back to 1995. I think I know a thing or two about endurance racing logistics because I have seen a thing or two about racing logistics. Two Rolex champion teams 2003 and 2011.
Does that make any sense to you?
Given that Tesla has super charging stations about every 100 miles on the interstates the could use those.