I am back for some more trusty advice from yall. I am doing the DALMAC at the end of this month. It is a four day event that requires some sleeping in tents in a number of public school yards. (i.e. no electric). I use a c-pap machine and really miss it for those 3 nights. Has anyone else faced this and do yall have any good ideas. I have been told to buy an inverter and hook it up to the car. Any other suggestions?