I don't think India will be the next Superpower.
China will be.
In a few years, China and the Tiger Economy will become self reliant. When they do, the US will wake up and realise ... there is no more money. None. Nada. China will no longer need any T Bonds. It will be like being hugely overdrawn, and then the bank saying "no more".
The month when that happens, US Govt T Bonds will not be worth the paper they are printed on, and the Dollar will go into freefall, probably taking GBP with it.
With Ireland and Portugal already poised to default on their Euro positions, all the EU net dependant countries will be left holding a huge financial baby, with no global financial allies. The only country not in trouble if the Euro follows the Dollar will be Germany.
So the global economy could be controlled by China and Germany.
How does that sound?
As for Glasgow ... no other city would want to be paying for a Games in 4 years time with the way things are looking at the moment.