Exactly three years before the start of the 2012 Games, Sebastian Coe, London Mayor Boris Johnson, Olympics Minister Tessa Jowell, a group of athletes and journalists boarded the Javelin train.

 

The Javelin, which will bring up to 25,000 visitors per hour to and from the Park, in Stratford, East London, in 2012, left London's St Pancras Station at 9.42am.
 

It took approximately six minutes and 50 seconds to complete the journey, under the estimated time of seven minutes.

An average journey can take around an hour in the car from Westminster to the stadium.
 

For two weeks during the Games, the Javelin train will travel at 140 miles per hour.

 

There will be a maximum of 12 trains in one direction in an hour.
 

Coe, the London 2012 chief, took on the role of train conductor.

 

He came on the intercom and joked: "Hello, this is Seb Coe. The good news is that I am not your driver this morning. The bad news is that I have Daley Thompson [double Olympic decathlon champion] here who is."

 

Johnson said: "What we have just seen is a very, very clear demonstration of the incredible efficiency of our transport system.

 

"This is something coming on stream before the Olympic Games even begin."

Jowell said: "This is going to bring a very large number of people down from Central London to the Park - 97 per cent of people will travel to the Park by public transport.
 

"These are going to be the public transport Games and the public transport infrastructure has been accelerated because of the Olympics."

World diving champion Tom Daley was also onboard the train and visited the Olympic stadium and the Aquatics Centre, where building is still in progress.
 

The 15-year-old was shown the first work to dig out the diving pool where he hopes to grab gold in 2012 and said: "That is pretty cool."

 

The teenager, who became Britain's first individual world champion when he won the 10m platform last week, said: "The Aquatics Centre looks amazing.
 

"The roof is like a wave and it looks incredible.

 

"They just started digging the diving pool - that's pretty cool.
 

"I have been trying to imagine it but you cannot imagine what it is really going to look like.
 

"You get a real Olympic buzz, I guess, when you see the aquatics centre.

 

"They just started digging out the diving pit and started digging it out today.

 

"It has been a crazy week and really unreal."