I can't thing of a quicker way to terminate an interview with me were I looking to hire developers.
I actually had something a bit like this happen back in 1990 or 1991 when I was building the engineering team for a software startup. I had two developers who were local to the area (San Diego) come in together for interviews. They actually had great resumes and relevant experience -- but when it came to talking compensation, then wanted (a) six-figure salaries (more than I was making as CTO/chief architect), (b) signing bonuses (did I mention that we were a startup and we're still about a year away from closing on venture funding?), and (c) broached the idea of company cars.
I thanked them for coming in and sent them on their way.