I think this has an undervalued benefit: if you run out of charge somehow, the trickle will let you limp to the charging station.
Like, EVs going fast take far more power than cars going slow due to wind resistance, so if you're travelling 5KM/hr then you'll take an order of magnitude less power. And if you do run out of power, you only need to get to the nearest wall plug or charger.
Obviously, cost makes this a very niche feature currently and generally you shouldn't run out of battery in most situations anyway. That said, this could be a good "better late than never" sort of thing on luxury cars.
Like, EVs going fast take far more power than cars going slow due to wind resistance, so if you're travelling 5KM/hr then you'll take an order of magnitude less power. And if you do run out of power, you only need to get to the nearest wall plug or charger.
Obviously, cost makes this a very niche feature currently and generally you shouldn't run out of battery in most situations anyway. That said, this could be a good "better late than never" sort of thing on luxury cars.