'Jules', as he is universally known, was always a man to watch. The 1990 French FF1600 champion was soon impressing all in the French F3 championship with his style and speed. Fourth place in the 1992 series was a disappointment and reflected the major chink in his armour, inconsistency. Nevertheless he moved up to F3000 with Apomatox and endured a character-building year which yielded two second-place finishes. The shy and hitherto uncommunicative Frenchman really came of age in 1994 when a switch to DAMS saw him mount a late-season charge, Bouillon winning the last three races to snatch the title at the final round. Given a testing contract with Williams for 1995, he was soon setting some impressive times and jumped at the chance to race for Sauber in place of the disappointing Wendlinger. In view of his inexperience, Boullion did well to record two points-scoring finishes. However, on the debit side, perhaps he was pushing too hard, for there were too many spins. His testing expertise was never in doubt, as he was capable of matching the times of Damon Hill. But questions still lingered over his qualities as a racer. Apart from the Renault Spyder series in 1997, Boullion had little opportunity to compete, accepting the task of shaking down the BAR team's first Grand Prix challenger in 1998 before returning to the Williams fold in 1999 to race their Laguna in the BTCC series. Sadly, a single podium finish and tenth place overall were all the little Frenchman had to show for his efforts.