Starting a Coffee Truck

Unique Selling Point First of all, provide insanely good coffee to your customers.
Menu Your menu determines the costing of the business. It also decides the targeted customers. When it comes to planning your menu, take serious consideration and start asking yourself questions like: 
- What makes you stand out from the crowd?
- What do you have that competitors  don't?
- What will be your signature coffee or snack be?
- What will get your customers excited about?
- Why will the customers go all the way out to hunt for your coffee truck?
- What will make your customers coming back over and over again?
Do some market analysis in the area you plan to step foot in and ask: 
- What is other coffee truck selling that you like?- What could you do to serve better / have a better product?- What are the customers experiencing and like about competitors' product?
CostingIt may range from RM80,000 to RM150,000 depending on the budget. 

Truck RelatedQtyUnitTotal (RM)

Hino Truck180,00080,000

5KVA Generator15,0005,000

Electrical12,0002,000

Plumbing11,5001,500

Kitchen Cabinet15,0005,000

Coffee Machine 120,00020,000

Ventilation1500500

Ice box1100100

Solar Panel1500500

High chairs3100300

Speaker1100100

Menu Board2100200

Coffee Tools11,0001,000

POS System11,0001,000

Estimation116,200

ExpensesQtyUnitTotal (RM)

Fuel1300300

Maintenance1800800

Mobile Truck License11010

Sole Proprietorship License16060

GDL License1500500

Water 1100100

Eletricity1150150

Salary 12,0002,000

Estimation1,770

Disposable QtyUnitTotal (RM)

8oz double wall paper cup10000.23230

10oz plastic cup with cover10000.30300

Sugar 51050

Fresh Milk 51050

Coffee beans550250

Ice5525

Utensils / Stationaries5100500

Estimation1,405

Right Price 
Once the costing above is done according to what you need,
Have a Credit Card serviceHaving not only a POS system (Point Of Sale - where merchant issue receipt upon receiving payment for product purchase). Keep up with the technology and make transaction easier for customer. Moreover, it enables sales tracking and keeping record for your business. 
Research
Planning does not stop. It is an on-going process of before, during and post. It is to make sure that you stay above your game, knowing the trend, maintaining loyal and new customers.