Back on page 2 of this thread 702jesse told us he had an S model. (I wish I didn't have to search to find things like that. Please, folks, tell us your year and model in your signature.) Since Renee is complaining about a slow warmup I'm guessing she does, too. We do expect the S model to warm slowly, because it first heats a 'kettle' of water on 'an electric stove', and only after that is hot does it start blowing air through the heating coils. I guess it could be faster than an ICE car, since that has to wait for the engine block to get hot before it can heat the 'kettle' of water. Folks with a 2013 SV or SL can get almost immediate heat from the heat pump.
End of April 2013: Traded my 2011 SL for a 2013 S with charge pkg.