Our rules in Australia state the we have to operate within 25m (vertical) of the summit. SO for example if the peak is 500m we must operate between 475-500m & walk into that zone carrying all our gear. You could park the car at 450m height & carry all your gear into the activation zone that might entail a walk of 20m or 300m or more depending on the steepness of the terrain.
David VK5NQP