Well you will be nuts by the time you finish this little undertaking. I have seen a lot of people do mobile coffee shops. The one thing I noticed on all of them, it was never cheap in the end. Retrofitting a van, truck or car to house a coffee shop will cost you more then you think.
If you don't have a power source handy you’re going to have to get a generator. 110 volt generators are very common. The problem you are going to run in to is the wattage. Even if you buy a small 110v espresso machine, they can pull 1,500 - 3000 watts. Tack on a coffee brewer for another 2000 - 4000 watts. Don't forget grinders, heaters, lights, and any thing else that draws power. I found a 7550 watt with a max at 13,500 watts generator at Lowes for $1200. You can also check here for generators.
http://www.portable-electric-power-gene ... ecials.htm
I would suggest a 220v generator, but the costs keep going up.
I have seen a few installs where they actually had the generator built in to the vehicle. But when you do that you have to consider venting, cooling, and noise control.
Now you also need a water supply, which will mean storage tanks plus a pump to give you some working head pressure. Don't forget a waste tank. Now by some miracle you can accomplish all this for under $10,000, you might want to check with local and state codes to make sure what you have done is even legal.
I am not trying to persuade you not to do this. I just want you to know that this isn't something you can just slap together and go do. And nothing in the coffee world is cheap. Most people who own coffee shops will tell you it is a labor of love.
