Senator RUSTON (South Australia) (14:59): Mr President, I ask a supplementary question. I refer the minister to government plans—and his answers to previous questions here today—to expand the coverage of the carbon tax to heavy on-road vehicles. Given you admit to extending the tax to trucking operators, can you confirm that this will cost the trucking industry over $500 million next year; and why should Australian families have any confidence that the family car will not be next?