There's one in the Tesla Model Y. Heating and cooling for the cabin, battery, and motors are all handled by a single integrated heat pump system. The part that

There's one in the Tesla Model Y. Heating and cooling for the cabin, battery, and motors are all handled by a single integrated heat pump system. The part that connects them all together is called the Octovalve. It's a big advance for electric cars because the cabin heater tends to really reduce range, so making it 3x more efficient with a heat pump instead of a traditional resistive heater makes a huge difference.