Quoting Amanda(::" <blockquote><b>Quoting Brink:</b>" <blockquote><b>Quoting Amanda(::</b>" ... [snip!] ... to work"</blockquote> Have your roommate take him to the party"</blockquote> He won't let her drive his car."
Then tell him to find another ride. I'm really short too, and couldn't drive our sedan while I was pregnant because I had to sit so close to the wheel. It's really unsafe if you get into an accident and the airbag goes off. Wonder how important getting to that party would be to him then?
Have your boyfriend drive your roommate to work, and then tell him to find a ride to the party. Also, I'm assuming it's a drinking party- I wasn't aware that those are "invite-only".
ETA: Or as someone else suggested, have him drive to the party with both of you, then when he gets out have her drive to her work, and then you only have to drive home.