I drove my car for 30 minutes at 55 to 60 mph and stopped and checked the car and the cat and evap test still had not cleared so I drove back home for 30 minutes at 55 mph and checked the car again and the cat test completed but the evap test did not. In MA you can pass the inspection with one test not complete so I was able to get a sticker. I haven't driven the car much since I got the sticker but I will check it again to see if the evap test as completed yet. I bought a code reader so I could check the car so that is how I knew I completed the cat test and not the evap test. Turning on the key and waiting 15 seconds doesn't seem to work for me. My check engine light stays on solid the whole time. That could be because the car did not fail anything it just had not completed two of the monitor tests. With out a code reader I don't know how people are suppose to know when the test are completed?