Exit condition:

{
  "leaveSpinning": {
    "remoteRunway": {
      "length": 5,
      "openEnd": 1
    },
    "minExtraRunSpeed": "$1.5"
  }
}

Dev note: Leaving with lower speed (e.g. $1.2) is possible with SpeedBooster equipped; not sure if this matters for anything though.