Table: formula_nippon_2006_3
Columns: round
circuit
date
pole_position
fastest_lap
winning_driver
winning_team

Question: Name the winning driver for mobilecast impul and twin ring motegi
SQL: SELECT "winning_driver" FROM formula_nippon_2006_3 WHERE "winning_team" = 'mobilecast impul' AND "circuit" = 'twin ring motegi'

Question: Name the winning driver for round 7
SQL: SELECT "winning_driver" FROM formula_nippon_2006_3 WHERE "round" = 7