I know people get all worried and they feel like they are in a closed and messy space when they are in their garage sometimes. I have an uncle that lives in Jersey that is a slop when it comes to keeping it clean in the garage. I found a site called CarGuyGarage.com and i recommended their storage solutions to my uncle just a little while ago.
They take any of the wall space and just turn it into another room of your house. I have seen some of their pictures and it is amazing. I mistook one of the garage for a kitchen because of all the cabinats and the flooring. It is pretty cool on how they can save that much space just by putting cabinets on the walls. They will make sure that everything in your garage right now will fit and the you will have space left over to fit more things. If my uncle decides to go through with this, I will try to pop by his house just to see how they actually do this.