Background – The gradient isn’t smooth. If I were going with a dark theme, I would use #111 or #222 for the background color.
Typography – Your paragraph lines need a little spacing.
You’re on the right path. I would redo the homepage, because it is the most confusing part of the website. If these locations offer the same services, why have separate navigation for them both?
In my opinion, I would only list the locations in the contact page. For the homepage, I would give people an idea of who and what Kwik Kar is and what they do.