BRUSSELS — The European Commission has a new brainwave for dealing with a looming energy crisis: Teach Europeans how to drive in an energy-efficient way. The proposal is part of a suite of new ideas for saving energy — from mandatory work-from-home orders to subsidies for public transport — as the EU prepares for worsening fallout from the war in the Persian Gulf. In a draft of its upcoming emergency energy package, obtained by POLITICO and set to be presented Wednesday, the Commission lays out