I thought this type of discovery deserved a bit of a higher profile, so here goes. Digital Press forum member, "Seaquest", posted about a game his father found about four years ago. I'll let Seaquest's words describe the finding:
"The Cat S.O.S game (Caterpillar scheduled oil sampling game)along with a colecovision was given to every cat dealership in 1983 to support the S.O.S. program. The customers would play it while waiting in the lobby. The game was made by the company Nuvatec. It was never sold commercially and could only be found exclusively in cat heavy equipment dealerships. My dad (who worked at cat) found that they were about to discard of both the game and the console so he saved it and gave it to me to add to my collection.
The game consists of a bulldozer that rides around and pushes dirt. Each dirt pile represents a "job". To keep from exploding you have to send in oil samples to the cat dealership ,then you will be told if the oil is good or bad. If you fail to do this occasionally your oil will go bad and your bulldozer will explode. To clean the oil you have to go to the cat dealership. The goal of the game is to make the most money from finishing "jobs".
I am pretty sure I have one of the last copys left in existense. If anyone knows anything about the value or has any questions please send me a message. Thanks!"
As you can see in the forum topic - which also contains more images - someone has already taken the charge to get the data off the cartridge and create a ROM of this amazing find!