Super professional and clearly communicated the smog test process. After hearing that the truck had been off the road for some time, They checked that the vehicle was ready to be tested by looking at the computer data. I had already taken my 2092 truck to another smog test business. They didn’t check the computer data before running the test. Since the battery had just been replaced, there was no data in the system so the test failed automatically. AND they flooded the engine so that it wasn’t drivable until the next day. I’m so glad I went to Palo Alto Shell this time and plan to return to them for my other car.