In my Engineering class we needed to do a project of our choice. I thought about building an on board air compressor for my truck. I made one that puts out about 5CFM, I want to get a small tank on it, any ideas for stuff to add? If this one gose well i may try to market it after a awhile of hard testing. How much would you pay for something like this($150)? Thanks for your input, just trying to make something for everyone to enjoy soon, hopefully.