Van Rossem sponsored and later became the majority owner of a Formula One team in 1989, Moneytron Onyx, which placed 10th of the 21 teams. The biggest success he achieved with his team was third place at the 1989 Portuguese Grand Prix with driver Stefan Johansson. The team signed an agreement with Porsche to use the V12 that Footwork then went on to use. However the deal was cancelled when Van Rossem announced the deal on Belgian television prior to the initial announcement. That night he made the news again, as he'd driven his Porsche to town square and set fire to it.