Renault: Questions remain following Kubica test

SPA-FRANCORCHAMPS, Belgium -- Robert Kubica's test with Renault following the Hungarian Grand Prix did not provide the team with all the answers it wanted over his readiness for next year.

After six and a half years away from the sport, Kubica returned to a modern F1 car following the Hungarian Grand Prix, completing 142 laps in a single day. Despite the extensive mileage on a tough circuit in high temperatures, Renault boss Cyril Abiteboul admitted that the test had left some questions unanswered over the Pole's readiness for a full-time drive next year.

"That was a test," Abiteboul said. "Frankly, we said we wanted to be extremely methodological and analytic about the way that we were…