Possible Clues:

• The wrong character, perhaps, to race on motorway
• Literal race on motorway
• Character that shouldn't appear in race on big road
• Fast speed on major road? It reveals a character flaw
• Error racing down the motorway?
• Was it wrong to mention Tiepo?
• One's about to cover race in Grauniad, supposedly
• Motorway dash -- a mistake, literally
• Run onto main road -- a blunder
• 'Motorway run' typing mistake?