Automatic trannys four down

We're thinking of getting a toad but DW insists on an automatic. I've got crossed eyes looking all over and can't find anything but sites that only lead to other sites with NO information. Does anyone have an actual list which AUTOMATIC vehicles are towable FOUR DOWN with NO alterations. Weight limit is 3500lbs! Here's what I've found so far but I'm sure there are others: Honda Fit, HHR, Saturn ION, Saturn VUE, Accent, Saturn L&S series. Grateful for help. :B