Sorry about the duplicate posting. For some reason, the first one posted as part of anther thread with the same title as my posting. My wife just bought a 2007 Sonata, and we are both quite pleased with it. One thing we miss, though, is the trip computer we had on the 2004 Elantra we just traded in. Since the owner's manual shows both types of Odometer (one with two trip meters, and one with a trip computer), and since the Trip Computer looks like an option ("if installed"), I asked today at the dealership, how much it would cost to install the trip computer. The sales guys had no idea, and sent me to the parts department. They had no idea, and sent me to the service department. They had no idea, and I had to actually take both the sales guy and the service guy out to the car to show them that it was not installed. Anyone have any idea what's involved with the "installation". I would assume (dangerous, I know) that it would be something like a programmable option (change of microcode perhaps?), or a plug-in module, or a jumper on a module, or perhaps a replacement module. The reaction at the dealership leads me to believe that either the option should have been there, or that the question was never asked before I asked it.