I interpret "nothing to do with" as meaning that they were independently working on the policy before and maybe after the fire. The ban might have something to

I interpret "nothing to do with" as meaning that they were independently working on the policy before and maybe after the fire. The ban might have something to do with potential battery fires, and the sinking of the ship might have something to do with burning batteries, so the absence of a direct causal relationship doesn't mean it's just two unconnected events. "...the hybrid exception perhaps makes some sense given the smaller batteries usually carried by these vehicles." Based on electric mileage, isn't it pretty much a constant that a plug-in hybrid has 1/10th the battery size and a non-plug-in hybrid 1/100th? 300/30/3 (miles) seems like a plausible ratio in range. I feel like people downplay this excessively because electric cars appeal to a craving for purity and hybrids do not.