car_presence_sensor.yaml

---
sensor:
  - platform: template
    sensors:
      car_back:
        value_template: >-
          {% if states('sensor.car_position_back')|float > 0.50 and states('sensor.car_position_centerb')|float > 0.50 %}
            on
          {% else %}
            off
          {% endif %}

      car_center:
        value_template: >-
          {% if states('sensor.middleb')|float > 0.50 and states('sensor.car_position_centerf')|float > 0.50 and is_state("sensor.car_front", "off") and is_state("sensor.car_back", "off") %} 
            on
          {% else %}
            off
          {% endif %}

      car_front:
        value_template: >-
          {% if states('sensor.car_position_front')|float > 0.50 and states('sensor.car_position_centerf')|float > 0.50 %}
            on
          {% else %}
            off
          {% endif %}