Has this been explored previously ? Limited regen seems like such a waste of energy, when it seems it would always be needed when heat would be needed, so why not explore diverting the waste energy immediately to heat coils, maybe a "heat bottle" ? Even if it goes out as waste it helps the driver @elonmusk @Tesla Lex on Twitter I once heard the service centres have a heat coil tool to "burn off" a pack without needing to plug into motors (though I'm not even sure if that's actually true, there would be a heck of a lot of waste heat, which I'd guess they would have to vent to outside, or run outside on a removed pack ??). Limited regen is a cold-related issue only, right ? So why are we wasting the potential energy, why not push it out to heat coils somewhere, coils in the cooling system or other heaters that can take the "waste" regen energy. ("heat bottle" is the cooling system after more thought damn you twitter lol) This way the driver would never experience limited regen in the cold, and the car could warm up sooner. If other parts of the car are also not ready yet for full regen, then they could get the heat first or have preheaters. Heat coils are basic primitive electrical components, surely they can can take the surges of power that the battery is not yet willing to accept, no ?