weakening. they were inching up. now down again. offset by falling supply and wor ris over unrest in libya and bahrain. off by about half a dollar. welcome back to "world business today." >> as crude prices rise so do, of course, the price of petrol. that's certainly the case of india with one exception. price controls there are keeping the cost of diesel fuel low. in new deli diesel is 40% cheaper than gasoline. consumers in india's booming auto markets are flocking to the cheaper fuel. >> reporter: india is motorizing rapidly. last year more than 2.5 million cars were sold here. a 20% increase in sales compared to the year before. businessman depak is adding to the fleet. he's among an increasing number of customers buying diesel powered cars because gasoline prices are shooting up.