Maquinando comes from the verb maquinar, which means to scheme, plot, or devise. It suggests a continuous, intense mental process of planning or imagining.
In
Get ready to cruise with Dalex in "Lambo"! This song is all about a guy who's completely captivated by a woman he can't stop thinking about. He's heard she's interested too, and he's just waiting for her to make a move, singing, "No sé por qué tú no te dejas ver / Si me dijeron qué quieres también" [I don't know why you don't let yourself be seen / If they told me you want it too]. He's so smitten that he sees her everywhere, even "en el humo cuando vo'a prender" [in the smoke when I'm going to light up].
He's literally "maquinando en el Lambo'" [scheming in the Lambo'], driving around, looking at her picture, and imagining all the possibilities. He's brushing off other women, leaving them "en visto" [on read], because he's convinced she's the one. He even tells her, "Y tú eres mucho pa' andar con ese lambón / Vente conmigo, tengo espacio en el Lambo'" [And you're too much to be with that suck-up / Come with me, I have space in the Lambo']. It's a fun, confident, and a little bit impatient declaration of desire, all set to a smooth beat.