In a giant shed in the Bedfordshire countryside - sits the largest aircraft in the world.
This is the Airlander 10.
It's known to the engineers as Mary - and she's a very big girl.
At 92 metres long - she's about the same size as a football pitch and 25% bigger than a Boeing 747 aeroplane.
She can carry up to 10 tonnes of freight and burns a fifth of the fuel of a conventional aircraft.
The Airlander 10 has flown once before under a US military programme - but its first flight in the UK is scheduled for early next year.
The developers have already got two big grants from the government and the EU - but they need to raise about £2million more - so they're now offering members of the public the chance to invest.
The project could create nearly 2,000 jobs in the county.
And in two or three years time - it could be taking off with passengers onboard.
Click below to watch a report from ITV News Anglia's Sarah Cooper