Members of a committee could not quite figure out why but concluded that California motorists spend billions more on gasoline than drivers in other states, even after accounting for taxes and fees.

The Trump administration's chief environmental regulator signaled a coming showdown with California, warning that the state won't dictate the future of ambitious automobile fuel economy regulations enacted by the Obama administration.

• The removal of Rex Tillerson as secretary of State injects uncertainty into the oil market and puts the fate of the Iran nuclear deal in question, analysts say.
• President Donald Trump shares secretary of State pick Mike Pompeo's hawkish views on the international nuclear accord.
• The collapse of the deal, as well as the prospect of new sanctions on Venezuela, could disrupt oil supplies and send prices higher.

UPS announced today that it would be building its own electric delivery trucks from scratch. It will partner with truck maker Workhorse Group Inc to build the first 50 vans that could eventually replace the delivery giant’s fleet of fossil fuel-burning vehicles.