Possible Clues:

• Half-hearted stuff for parent
• He gets knighted in 'Cars 2'
• Mum is boss, not son
• See 4
• Lightning McQueen's pal
• I leave friendlier parent at school
• Mother — a term now rarely used
• Dura ___ (brain membrane)
• Looking back, lots of the papers cover first Tallaght hospital in Dublin
• Mother (Latin or old slang)