Complex sentence: He was a Formula One test and reserve driver in for the Minardi F1 team, taking part in the Friday practice sessions during Grand Prix weekends, making 17 appearances in all.Currently active in the FIA GT1 World Championship with Marc VDS Racing Team.
Split into simpler sentences: He was a Formula One test and reserve driver in for the Minardi F1 team, taking part in the Friday practice sessions during Grand Prix weekends, making 17 appearances in all. Leinders is currently active in the FIA GT1 World Championship with the Marc VDS Racing Team.