This strat is only usable right to left. This room has many offscreen shot blocks. Shooting enough of them with wave + spazer or wave + plasma allows you to pass through the speed blocks. There is just enough time to pass through all of the Speed blocks before they become solid again.

Entrance condition:

{
  "comeInWithStoredFallSpeed": {
    "fallSpeedInTiles": 1
  }
}

Requires:

{
  "notable": "Shot Block Overload (Speedless Speedway)"
}
"Wave"
{
  "or": [
    "Spazer",
    "Plasma"
  ]
}
{
  "enemyDamage": {
    "enemy": "Beetom",
    "type": "contact",
    "hits": 3
  }
}
{
  "or": [
    "Ice",
    {
      "ammo": {
        "type": "Missile",
        "count": 1
      }
    },
    {
      "ammo": {
        "type": "Super",
        "count": 1
      }
    },
    {
      "enemyDamage": {
        "enemy": "Beetom",
        "type": "contact",
        "hits": 15
      }
    }
  ]
}

Exit condition:

{
  "leaveWithStoredFallSpeed": {
    "fallSpeedInTiles": 1
  }
}

Unlocks doors:

{"types":["missiles","super"],"requires":[]}
{"types":["powerbomb"],"requires":["never"]}