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.

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}},
  "ScrewAttack",
  {"and": [
    {"enemyDamage": {"enemy": "Beetom", "type": "contact", "hits": 5}},
    "h_bombThings"
  ]},
  {"enemyDamage": {"enemy": "Beetom", "type": "contact", "hits": 15}}
]}