What Barry said.
Anyone know any good reason why it has been reduced to 4 hours?
I find it difficult to believe that it's been changed solely because of "fan feedback", which seems to be what is being touted on the WEC website, viz: "The 2019-2020 FIA World Endurance Championship calendar announced today heralds the return of two popular venues, São Paulo and Bahrain, and also introduces a revision to the duration of its different races in line with fan feedback gathered in the 2017 WEC Fan Survey"