I'm looking to buy the 2009 Interstate and was wondering if you are still enjoying yours? I'm looking at it as my full time car between CA and AZ and traveling with my small dog around the U.S. and Mexico. I know it gets less gas mileage than yours. Around 18 per gal. The nearest dealer to me is 4 hours away, so I thought maybe I could go up there, drive it around the town and sleep in it for 1 night to get a feeling for it. It is a big investment. I need to make sure it will be practical for a full time car first. I don't drive long distances on a daily basis and am told you can park it most places you can park a car with the exception of underground parking lots. Dumb question, but can you dump your waste somewhere other than an RV park? Just curious if I use the shower and john,in the city, where would I dispose it?