The problem with greater regenerative braking is that it leads to more abrupt deceleration. The car has to strike a balance. I drive a Model S Plaid. My car’s

The problem with greater regenerative braking is that it leads to more abrupt deceleration. The car has to strike a balance. I drive a Model S Plaid. My car’s maximum regenerative braking capability is 150kw. It is easily reached, immediately, when you let off the accelerator at highway speed, but more would not necessarily be better.