Nothing, and yes.
I must get asked this question at least twice a week, seriously. The consultation is free, and it’s usually fairly simple to determine what kind of case you are and whether or not bankruptcy is a good idea. Some clients have such awfully complex cases that I stop the phone consult and ask them to come in, but most don’t need that.
And yes, I do phone consults. I love phone consults. There is no reason for you to drive down to the office unless we run into some complicated bumps in your case.