Carrozas literally translates to "carriages" or "floats" (like in a parade). It's an interesting word choice that evokes a sense of old-world luxury or grand spectacle, rather than modern vehicles.
In the song, Gera MX raps about "Mamis en carrozas," which paints a vivid, almost fantastical picture of women being transported in a lavish, perhaps even ostentatious, manner. This imagery adds a unique flair to the song's narrative of street life and success.
Gera MX kicks off "Diamantes Y Rosas" by asking us to think about where we're going, not where we've been. He's all about moving forward! He immediately sets a luxurious scene with "Manejo líneas lujosas, mamis en carrozas, diamantes dentro de rosa" [I drive luxurious cars, women in carriages, diamonds inside roses], but quickly reminds us that "la calle es peligrosa" [the street is dangerous].
He talks about being a gangster, but one who keeps a low profile: "Los que me cuidan no usan Face, es más, nunca les verás la face" [Those who protect me don't use Facebook, in fact, you'll never see their faces]. Gera MX is confident in his success, saying "Van a sobrar los billetes" [There will be plenty of money]. He also warns rivals, with a funny football reference: "O te van a meter ocho como el Bayern-Barcelona" [Or they'll put eight past you like Bayern-Barcelona]. He reflects on staying true to himself, "Soy el mismo desde chico" [I'm the same since I was a kid], and how he's worked hard to get where he is, overcoming past struggles. He even describes his relationship with fame as an affair: "Yo tengo un amorío con esa que llamas fama, me besa todos los viernes, me deja fumar en cama" [I have an affair with what you call fame, it kisses me every Friday, it lets me smoke in bed]. It's a look at his journey from the streets of Mexico to becoming an idol, all while keeping it real.