Hanging in the balance is the nation's housing market, which has been a big driver of the economy.

He could also see the driver of the sledge-a huge figure, much bigger than a man.

"I don't think the system has been a big driver of energy efficiency."

The big driver shifted a bit before he mentioned it.

But the biggest driver is the cost of fossil fuel.

The single biggest driver is the rapid rise in the nation's money supply.

The biggest driver of the lower costs is better efficiency.

As we heard, the biggest driver to deforestation is poverty.

The European internal market is the biggest driver of competitiveness in a global context.

Economic issues were a big driver of the revolution.