It was one of Amazon's flagship shows – and it pumped a massive £100 million into making three series.

But now it seems Jeremy Clarkson's action-packed motoring extravaganza The Grand Tour may be out of gas.

Amazon hasn't offered Clarkson a fourth series and he has already found himself a new job – presenting a revamped version of ITV quiz show Who Wants To Be A Millionaire.

It was one of Amazon's flagship shows – and it pumped a massive £100 million into making three series

But now it seems Jeremy Clarkson's action-packed motoring extravaganza The Grand Tour may be out of gas

Sources say co-presenters Richard Hammond and James May – and the entire Grand Tour crew – might also be job hunting when series three filming is complete in the summer.

Says my back seat mole: 'There is nothing to suggest they are going to do another one. No one has signed anything and employees are wondering where everyone will go once filming wraps.'

Clarkson, Hammond and May signed a multi-million-pound deal to move to Amazon's subscription service in 2015. The trio's big-money move came after Clarkson's BBC contract was not renewed following an incident in which he attacked a Top Gear producer.

Clarkson had fronted 22 series of the BBC show.

The Grand Tour producer Andy Wilman – another former Top Gear man – said yesterday: 'We are focusing on series three at the moment.'

Clarkson said: 'I am doing one week of Millionaire. Then there is season 3 of the Grand Tour. And then I'll think about what's next.'