Mountain bikes that are considered equivalents to Jeeps and Land Cruisers?

This might be the wrong community to ask this but I'll give it my shot. I already own a very good Trek bike but it's an urban commuter. I want something that handle dirt and country roads just as good as a Jeep or Land Cruiser. I know mountain bikes are best suited for off-road scenarios but I've only ever used urban bikes and BMXs. Is there a brand that is revered by mountain bike enthusiasts in the same way that Jeep is to car guys? Thanks in advance.