Believed to be the vehicle teased by a dev a little after launch:

All images via: https://x.com/Mr_Rebs_/status/2040057069156413925?s=20

Good thing it was cut. The vehicle sandbox doesnt need another UNSC tank beside the Scorpion. The heavy vehicle slots are filled by the Scorpion and Wraith, and the light vehicle slots are filled by the Warthog, Mongoose, and Ghost. The flying slots are filled by the Banshee and the Falcon. New additions are not needed, the sandbox already has everything it needs.

the vehicle sandbox doesn't have a warthog which actually handles well, but at least it seems they buffed its health?

this one might be a brute tank given that the projectiles look similar to that of the ravager and shittier phantoms.

would've liked to see more squad oriented vehicles return, like the spectre and prowler. also the elephant and scarabs and shit because why tf not.