For decades, one of the most tangible and consistent financial benefits of a Costco membership has been fuel savings at the warehouse gas station — typically 20 to 40 cents per gallon below market, available to any member who adds a gas station stop to their warehouse visit. For Costco's growing community of electric vehicle members, that familiar fuel savings proposition has a new form — and it is more comprehensive than most EV owners realize. Costco's electric vehicle ecos