home-assistant-configuration/config/sensors/users.yaml

- platform: mqtt
  name: "Jeff Destination"
  state_topic: "jeff/driving/destination"
- platform: mqtt
  name: "Kat Destination"
  state_topic: "kat/driving/destination"
- platform: template
  sensors:
    jeff_speed:
      friendly_name: "Jeff Speed"
      unit_of_measurement: 'mph'
      value_template: "{{ state_attr('device_tracker.jeffrey_s_iphone_11_app', 'speed') | float / 1.609 | round(0) }}"
    kat_speed:
      friendly_name: "Kat Speed"
      unit_of_measurement: 'mph'
      value_template: "{{ state_attr('device_tracker.life360_kat_stone', 'raw_speed') | int }}"