Question: In what year did the team of aston martin racing have a position of 6th?
SQL: SELECT COUNT("Year") FROM "2-18053999-1" WHERE "Team" = 'aston martin racing' AND "Pos." = '6th';

Question: Which year did the team of Pescarolo Sport have a Class Position of 7th?
SQL: SELECT MAX("Year") FROM "2-18053999-1" WHERE "Team" = 'Pescarolo Sport' AND "Class Pos." = '7th';

Question: Who were the co-drivers of the vehicle that had both a Class position and position of 7th?
SQL: SELECT "Co-Drivers" FROM "2-18053999-1" WHERE "Class Pos." = '7th' AND "Pos." = '7th';