This is just geeky enough...

[Moscow Mule]

What they actually needed to do was not all move to the end of the bus at first, but start moving the gold.

In the movie, after they have crashed, there's a chain of blokes from the gold to safety - moving the gold first would have fixed them up a treat...

[Mich the Tester]

There're several sheets of maths here," said John Godwin.

Yes, and he made a mistake. See this bit;

‘First, the coach needed to be stabilised. This involved smashing out the windows on the part of the coach overlooking the drop and smashing them inward at the front end to improve the weight ratio slightly. First, the coach needed to be stabilised. This involved smashing out the windows on the part of the coach overlooking the drop and smashing them inward at the front end to improve the weight ratio slightly.’

That wouldn’t improve the weight ratio at all. Smashing the front windows inwards would move the weight of the glass toward the part of the bus hanging over the cliff, making the rest of Mr Godwin’s calculations somewhat superfluous.

[DaveB]

...to be one of you lot.

So own up, which one of you is John Godwin from Surrey?