A dramatic fire has erupted at Heathrow Terminal 3, sending thick grey smoke across the skyline and bringing morning travel to a standstill. A car caught fire in the terminal 3 car park, sparking a massive blaze that ripped through the multi-storey structure, leaving passengers stranded and vehicles stuck in long queues outside the airport. The M4 tunnel, a key route connecting to Terminals 2 and 3, has been paralyzed by the blaze, causing major disruptions for commuters and travelers alike. WATCH