In this op-ed in The Hindu, Assem Shrivastava and James Boyce write:

"If strict regulations for capping automobile licenses are followed, Delhi’s citizens can reap triple benefits: cleaner air, quicker and safer transportation, and more money in their pockets... The misguided national subsidy on diesel — a subsidy intended to benefit the poor and is instead well-harvested by wealthy automobile owners — should be offset in Delhi by an equivalent tax."