new_contents: #!/usr/bin/env python3
  import time
  import cereal.messaging as messaging
  from selfdrive.manager import start_managed_process, kill_managed_process
  
  services = ['controlsState', 'thermal']  # the services needed to be spoofed to start ui offroad
  procs = ['camerad', 'ui']
  [start_managed_process(p) for p in procs]  # start needed processes
  pm = messaging.PubMaster(services)
  
  dat_cs, dat_thermal = [messaging.new_message(s) for s in services]
  dat_cs.controlsState.rearViewCam = False  # ui checks for these two messages
  dat_thermal.thermal.started = True
  
  try:
    while True:
      pm.send('controlsState', dat_cs)
      pm.send('thermal', dat_thermal)
      time.sleep(1 / 100)  # continually send, rate doesn't matter for thermal
  except KeyboardInterrupt:
    [kill_managed_process(p) for p in procs]
  
subject: Add a minimal debugging tool to show the UI while device not in car (#1937)