Here is a brief description of the drivable mine vehicle in Red Faction 1 for the PS2. it's kind of a hidden feature of the game and according to this description below it only appears one time in the entire single player campaign
(this description was copied and pasted from the following sorce, but this website in the link had too many popups for my enjoyment.)https://redfaction.fandom.com/wiki/DrillerDescriptionThe vehicle appears as a tank, which is technically a tunnel boring machine. it Features 2 drills to make tunnels on almost everything, except for hard steel that makes up the doors of the mine shaft. An advantage of this is, unlike armed vehicles, it has almost infinite uses until it requires maintenance making it unusable for tunneling. However, to make an efficient way to kill enemies, is to drive through them.
Entering it you can see a green monitor, which is a night-vision camera to see in the dark, along with the drills on the sides of the monitor. On the top-left there is a Driller's HP and when you click the secondary mouse button, it changes the camera view from left-right sides and backwards. However every once in a while you need to give it another drill bit.