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 Samus 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"]}