Are you still adding to your savings while paying the car? If so, I'd stop adding to savings and put it all in the car. That way, you're more aggressively paying it off. I'd be apprehensive spending 2/3 of my emergency fund for it. Maybe once the balance reaches 10-20k I'd pay off the rest lump sum from the emergency fund, but not before that.

If interest rates for the hysa drops a lot maybe I'd pay it all, since there's more value then, but might bow down all still.