Diesel predicted to go up

Wall Street’s love of renewable energy could mean oil producers will now struggle to meet demand.  Spending on oil extraction fell last year to about $330 billion, less than half the total from its 2014 record.  Some traders are using options, which allow the holder to buy or sell an asset at a specific price in the future, to wager on prices hitting $100 by the end of next year. 
Average spot rates for refrigerated transport rose 5.8% from April to May, according to DAT Solutions.  This is not an anomaly – The Cass Freight Index for May is up 7.7% from April.
We often talk about increasing shipment size to cut transportation costs – what other ideas do you have? Share them with us.