WOW!! I described the problems I was having and the mechanics went to check the car, and after a few minutes they asked me to go out into the shop so they could show me some things. The mechanic showed me my brake pads, and said that they were still perfectly fine. My car had been shaking because my tires were crap! However, he then told me that I had a worse problem- my gas tank was leaking!
THE SAID NO CHARGE!!! I went back into the waiting room worried about how I was going to be able to afford fixing my gas tank leak as well as replacing my tires. A few minutes later, the mechanic came through the front door and told me my car was ready and gave me my keys. I was confused and said But I haven't paid you or anything... and he said No problem, we want you to come back later to us so it's no charge. !!!!