Hey I just wanted to chip in my advice on this one. I run a coffee truck in Albuquerque, New Mexico (
Green Joe Coffee Truck, Albuquerque New Mexico) and have written a book on how to build coffee trucks. Here's what I've learned:
1. Once you become the coffee guy, you are now the coffee guy. People will approach you with awesome gigs, such as weddings, corporate events. You can charge a fairly good amount for these. My going rate is $100/hr with a 3 hr min. However, if you have a huge 220v commercial machine, there is no way you are going to be able to power this at wedding. I took the advice of getting an Astoria Divina. Great machine. 220v. 5000 watts. Super powerful. Its a faster machine than I am barista. However, I cannot use this for indoor catering. So, I had to buy another machine: ECM Barista. Great machine for catering and so far, I've found it can hold it's own in a long line. If I were to do this whole damn thing again, I would get a Barista to begin because 1. It's cheaper and 2. It's more flexible. Once the truck showed to be a success, then I would reinvest into another ECM Barista, thus giving me 2 machines (which would allow me to double book events and make double money!).
2. 50 cups an hour and your a badass! I'm open for 6 hours at a community college where I have 4k people walking by every day. I sell 100 cups a day. To do 50 cups a hour solo, you will have to ring up a client in less than 15 seconds, Pour Drink/Steam milk in 30 sec. Real tough to do. I think a more realistic goal would be 20 cups an hour. Average of $5/cup and you'll be sitting near $100 an hour. Not bad for making coffee.
3. Having a route vs one place vs drive thru model. This is an on-going argument in the coffee truck arena. I have a contract at a community college, so I've lucked out. We do deliveries to the staff. I also have a cart that I use to get deeper into the college campus during busy times. I employ myself and one employee at 30 hrs a week. The reason I like this model is because of consistency. I personally believe that coffee is a consumption of habit. Once a habit is built, it will continue to remain. So I like to set up in the same place, same time. We memorize names and drinks so that all a person has to do is swipe their card. I want to alleviate any reason to not get coffee from me. I personally believe that if you can find yourself some good foot traffic that is there early in the morning, you will find some business.
If you do decide to do the route model, might I suggest sending a group text when you are on your way so that you can let people know you're coming and even possibly collect orders. And I would again reinforce the need to remain consistent. It will have to be your route every day. I hear about some trucks doing a monday at the car lot, tuesday at the flea market, wednesday at downtown. It may work for them, but I can't see how that would generate large numbers of income. Sure, on the weekend that sounds good. I don't mind be undependable on the weekends, so I can take some time off if I want. But during the weekdays, if you want Green Joe Coffee, you know where to find me.
4. People put alot of emphasis on fast recovery times and while I agree your machine needs to pump out commerical needs, there is also something to be said about having a decent line. A line of customers as far as I'm concerned is one of the best forms of marketing you can have. In fact, if I'm working an event and I get a customer to walk up, I'll kind of nurse the transaction and talk to him a bit, just to start that line. So, I'm not exactly sold that drinks need to be put out as fast as possible. In my humble opinion, I think sometimes it's okay to have a line started...
Anyhow, I hope this helps. I wish all the best. It's been pretty awesome leaving my corporate job and heading this project. Wouldn't trade it for the world.