Which idiom, borrowing a car term, means to assume a secondary position?

Assassinated in 1990, Rabbi Meir Kahane founded which militant organization in 1968? Which fleet, assembled in the 1580s, was commanded by the Duke of Medina Sidonia? According to Olympic lore, the U.S. flag bearer refused to dip the flag to the king at the 1908 Games in which city? Assistant U.S. attorney general from 1953 to 1956, who later became chief justice and won the Presidential Medal of Fre… Fred Astaire was nominated for a Supporting Actor Oscar for which fiery 1974 disaster epic? Astrid Lindgren, who died in 2002 at 94, first spun tales about which freckled girl for her daughter? Astro is the dog of which 21st-century cartoon family? Astronaut Michael Foale was left in the dark in June 1997 after a supply ship punctured which space station's Spektr mo…