Some guy has 4 of these FMB Super Prestige / Schwalbe Rocket Ron tubular tires up on eBay, for a whopping $210 a pop. That's pricey but essentially a custom-made tire. I'd hate to flat them but that would be a nice tire for muddy/soft days.
Got me thinking - what would be your dream tread / casing combo? If you could take any tread and casing and put together a tire, what would it be? FMB could do it...maybe it'd be a fun project if we had the funds to do it. Different treads, front and rear?