Go to where it says B on the map in game. Near Bruski's office is a car crushing machine. To it's left is a car that will respawn if you leave the junkyard and come back. Take the car to the crusher and I think it gives you like $415 or so. Do this until it says you have enough money to pay Bruno, then it will say go to Joe's.
Hope that helps.
Problem with GFaqs is that after you reach a certain karma level it says, "No Posting Restrictions"....and people take that literally.