Went here to get my mother's car smog checked. It's just around the corner from our house, so that right there was a huge advantage to going here. I drove right up, got everything done in less than 10 minutes, was able to pay by credit card, AND got a CD out of it; for those scoring at home, it was a Los Tigres del Norte CD (East LV por vida!). Easily the most stress free transaction I've ever had involving a car.
If you're ever in need of a smog check and you're on the far east side of town, hit up Nate's.