Last night my 2005 X decided to take a nap on the highway. No weird noises or anything, but all of a sudden the accelerator stopped working. Seemed similar to the ECM relay problem, where my whole car turned off while driving. Got that fixed though a couple years ago. Last night, car was still on, engine revving, but no go. Made it to the side of the highway, put it in park, reverse, neutral, drive, 3, 2 and 1, couldn't really hear the shifting. It would only go about 2 mph while revving really high, but I only did that for about 30 seconds. Smelled something like a burning clutch, but it's an auto (110,500 miles). A flywheel maybe? I did the radiator bypass a couple weeks ago, I don't think that would have anything to do with it but...I'll probably find out tomorrow when the shop looks at it...I thought I'd tap into the infinite wisdom here too.