Several companies are developing thermo acoustic heatpumps that will have some advantages over regular heatpumps. They should produce less noise, don't use greenhouse gasses and work in a wider range of temperatures.
My Toyota hybrid reliably does not start after 4 weeks not driving. The 12 volt (1 year old) battery is drained too much after such a period of inactivity. I was not expecting this from Toyota, pretty disappointing.
>+A +B
It is annoying but it works.