Sky Sports F1 has learnt that McLaren ran development parts for 2013 during Friday practice at India without telling an oblivious Lewis Hamilton.
It is understood that Hamilton's MP4-27 carried experimental components throughout both sessions but the driver was deliberately kept unaware by the McLaren team on account of his upcoming transfer to rivals Mercedes.
"Sam Michael told us at lunchtime that Lewis Hamilton was running parts for next year but McLaren didn't tell Hamilton because they didn't want him to know what they were," revealed Ted Kravitz during The F1 Show.
Serious? Wow. Talk about tension. Anyone spotted what the parts were?