The news: Booster Fuels raised $125 million to fuel growth of its mobile gas service used by fleet operators including Amazon, UPS, Imperfect Foods, and others. The details: Founded in 2015, Booster got its start by partnering with employers to fuel up employee vehicles in private corporate parking lots. Now it is also fueling up more than 500 fleets for major logistics carriers and their contractors, delivering fuel directly to their vehicles. It also has a consumer business. Booster offers delivery of renewable diesel and also last year rolled out on-demand electric vehicle charging.