sentences:  Towards the end of the season Stone Brothers Racing entered a car for David Besnard as preparation for the long distance races, in the main V8 Supercar series, the Queensland 500 and the Bathurst 1000, which unlike the other races require two drivers for each competing vehicle.Since then main series teams have used the series to help get their endurance co-drivers up-to-speed, or have employed drivers competing for other Fujitsu Series teams.While originally Fujitsu Series teams were allowed to enter main series events, this has since been discontinued as all main series events are limited to those teams carrying valid franchise slots for the main series, although in limited circumstances Fujitsu series teams have been able to lease entries from main series teams.