First off, for those with the heated seats, are they adjustable at all? ie, can you increase or decrease the intensity of the heat? A high/low option? Do they just stay on for a few minutes? The CT200h I drove had a twist knob to adjust the temp. I only saw a button on the one I drove but the salesguy said it had high and low. Second question, is there yet a trailer hitch available for the v? I do not plan to tow anything with it. I would want it to use my cargo hauler rack for tailgating at football games. I know its out for the Prius and the CT200h. Can you tow anything with the v? Like a small jetski or anything?
I am not clear how anyone would design a trailer hitch before one could purchase a v, so I imagine it will take some time. Page 7 Toyota does not recommend towing a trailer with your vehicle. http://www.toyota.com/t3Portal/document/om/OM47674U/pdf/sec_02-05.pdf
I can answer your first question since Jimbo answered the second. It's an on/off switch with no temperature control. The heaters do cycle however, so it's not like they'll continue to burn your bum until you press the button to turn it off. I can leave mine on all winter if I wanted to and it'll just cycle on and off automatically, at least on the 2010 Prius.