Senator BIRMINGHAM (South Australia) (14:52): My question is to the Minister representing the Minister for Climate Change and Energy Efficiency, Senator Wong. Does the minister agree with her South Australian Senate colleague Senator Gallacher, who is quoted in the Adelaide Advertiser today as saying that a carbon tax could cause small businesses running large trucks to 'go broke or cut corners'? Can the minister guarantee that the carbon tax will not apply to fuel used by small businesses running large trucks?