Possible Clues:

• Secret motive
• Dad had engine modified showing ulterior motive
• What we see in Copenhagen -- Danes' ulterior motive
• Secret motive behind one's actions
• Off-the-record motive (2 words)
• Ulterior motive that could delay the meeting?
• Secret plan suggested by Häagen-Dazs?
• Presumably where you'll find hiding-go-seek champion with a to-do-list or an ulterior motive?
• Taking collagen daily may reveal an ulterior motive!
• Secret line-up as might gather in A-lists?