I have the UMIK-1 and have already taken some speaker measurements using the basic tutorials, I got this primarily for home speaker assessment and speaker building. But I would also like to fool around with in-car measurements. I have several different car speaker systems I would like to install and test, mostly for the fun of it. So far, what I have figured is I can burn the Pink Noise signal onto a disk and play it back on the car stereo. The microphone I would install at the head position pointing upward. I would use 90 degree calibration file. Is this the proper way to do this? Am I missing anything? I did search various corners of the internet, but there isn't a great deal out there in terms of support for using REW and UMIK-1 for in-car measurements.