Sports car endurance races are far too long, and far too physically/mentally demanding, for one driver to complete safely. Most WEC and IMSA races run anywhere from 100 minutes up to 24 hours, and the format is built entirely around teams sharing driving duties. 

The use of 2017's faster-than-ever World Rally Cars will be restricted to drivers the FIA feels are competent enough to compete in them.There has been concern in the service park about the increased speed from the new cars, prompting calls from the current top-line drivers to restrict access. Some drivers...