UK
Assuming an ITV deal is in the works for all three stars, the interesting part isn't a show the three do together, it's the programmes they make individually because an ITV deal would almost certainly be exclusive.
The sort of programmes Richard Hammond makes would easily fit work on ITV and probably be more popular than their other prime time factual shows.
James May's shows wouldn't fit quite so well. They're a lot more 'BBC 2' and might not be the best fit for ITV4.
It's similar for Clarkson's (excellent) documentaries. They fit perfectly on BBC 2 but wouldn't on ITV- they'd be more suited to C4.
The sort of programmes Richard Hammond makes would easily fit work on ITV and probably be more popular than their other prime time factual shows.
James May's shows wouldn't fit quite so well. They're a lot more 'BBC 2' and might not be the best fit for ITV4.
It's similar for Clarkson's (excellent) documentaries. They fit perfectly on BBC 2 but wouldn't on ITV- they'd be more suited to C4.