I am having a similar issue with my team where less than half the people show up. One would think this is a big deal, but then what I mean to say is that three of our 7-10 members show up. But I am actually beginning to like this. Its easier for me to get things done.
As for your teams problem..... Just try to think of ways to make it interesting for them. To expand on someone elses idea, you could have people log hours, then whoever gets the most hours gets first pick at being driver or whatever. Also you should consider getting food at every meeting, and make it clear that in order to be eligible to eat the food they need to be there on time, and have stayed until the end of the previous meeting. I am just guessing that the problem is that they dont know what to do, so just try to come up with tasks. If you dont have a field, then put together a team to make a field. If they manage to screw that up then I dont know what to say....
