THIS month's budget will be the first to be beamed into the House of Commons directly from the future, Gordon Brown has revealed.
The prime minister said Britain's economic recovery would be based on electric bubble cars, floating skateboards and nuclear De Loreans powered by bits of old fruit.
In an interview with the Independent, Mr Brown revealed that chancellor Alistair Darling has travelled to the year 2060 to gather evidence of future transportation methods as well as the results of every sporting fixture for the next 51 years.
He said: "Everything is going to be electric and we'll be able to make electricity from potatoes and banana skins. It will cost a lot of money but we can afford it because we can bet on all the horse races and stuff."
Mr Brown also dismissed business calls for new investment in Britain's road network, adding: "Roads? Where we're going, we don't need roads."
Dr Julian Cook, director of political psychiatry at Reading University, said: "It has been fascinating to watch the steady evolution of the prime minister's dementia over the last few months.
"From thinking he was not only Spiderman but also his own arch-nemesis Doctor Octopus, to claiming he had created a new world order in a shed in the Docklands.
"And now he seems to be living in some kind of electric fantasy world where we all drive around in banana-powered De Loreans and wear self-fastening shoes. I'm really going to miss him."
A beleaguered Downing Street spokesman said last night: "He had a Back to the Future marathon after the G20 and it got him all worked up. Seriously, just forget it."