In the early stages of your business, when you can only afford a Burger Bike and are still cash-strapped, you will need to pick a location with a customer mix and cost of doing business that's favorable to you.
For instance, a location like Park Central might not be the best place to start your business. It has a higher daily permit fee with lots of Environmentalists and Fit Ones hanging around, and you know they are pretty particular about their food. You might not be able to afford the quality they require, and their feedback will damage your business's reputation.