Aircela, founded by Eric Dahlgren and Mia Dahlgren, shrinks the entire e-fuels stack — pulling CO₂ from the air and synthesizing it into gasoline — into a single machine roughly the size of a refrigerator. Where most synthetic-fuel plays are billion-dollar industrial plants, Aircela’s bet is distributed and tangible: a unit you could put on a rooftop or forecourt that makes carbon-neutral gasoline on the spot, for the engines that already exist.