CAUTION: Extractors are dangerous and necessitates owner educate the customer in their use. Think, research and plan before you buy it laundry mat equipment. It is a personal business and whether or not you succeed, or fail, is your decision.
You can earn additional money by providing a wedding gown dry cleaning to individuals. How easy is this? All you have to do is get a few regular clients paying you $25/week (at a minimum) to pick up, wash, dry and fold their clothes. With only four clients, you will likely make an extra $400/month before expenses. Cuttings 10 clients, you can earn extra $1000/month at the $25/week velocity. Believe me, there are plenty of school students that never even seen how laundry will be and would gladly invest on help.
Most locations of weigh stations are relatively accurate, though there are weigh stations in use that are not marked on the atlas. Most trucking regulations are refreshed and accurate, though enforcement information is not available.