fix naming convention

opponent_car.gd

@@ -0,0 +1,17 @@
+extends PathFollow2D
+
+export (float) var speed = 0.125
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	if not Global.race_started:
+		return -1
+		
+	var position = get_unit_offset()
+	position += speed * delta
+	set_unit_offset(position)
+