Luxury auto brand Mercedes-Benz is known for its devotion to building some of the most luxurious vehicles available, but the company has really gone the extra mile with its most recent project: the Mercedes-Benz Viano VISION DIAMOND. Though vans often have the reputation of being middle-class family-haulers,  the Mercedes-Benz Viano VISION DIAMOND takes all of these assumptions and turns them on their head. This ultra-luxurious van would put most standard limos to shame, as it gives passengers more room to navigate through the cabin.