The Warthog vehicle design to be used in Halo 4 is buried deep within upcoming Xbox 360 exclusive racing game Forza 4.
It's viewable in Forza 4's "Autovista" mode, Wired reports. Images are below.
You can use motion-sensing add-on Kinect to move around the model of the Warthog, which Microsoft describes as an Easter Egg.
AI Cortana will narrate and tell stories about the vehicle's prowess, apparently. You can't drive it, though.
Halo 4, announced at E3 in June, is set to launch on the Xbox 360 next year. It's in development at Microsoft's internal Halo developer, 343 Industries.