It judges by the numbers of F1 Fanatics heading to Spa - Francorchamps for next week 's race .
It 's hard to believe the reports of poor ticket sales at the track in recent years .
Judging by the numbers of F1 Fanatics heading to Spa - Francorchamps for next week 's race , it 's hard to believe the reports of poor ticket sales at the track in recent years .