An unnamed medium truck is due to appear in Grand Theft Auto VI in at least two configurations, a box truck seen on the freeway and a flatbed version, one instance carrying tyres, all within the first trailer. It resembles the long-running Mule series and appears to be based on the Isuzu Elf, the same real-world cab-over the HD-era Mules already reference.
Vehicle data via GTA Wiki (Fandom), CC BY-SA 3.0.