diff --git a/vehicles/beetlecar.tscn b/vehicles/beetlecar.tscn
index e79e5b7..e2075bd 100644
--- a/vehicles/beetlecar.tscn
+++ b/vehicles/beetlecar.tscn
@@ -14,11 +14,11 @@ extents = Vector3( 0.417676, 0.42291, 1.58775 )
 
 [sub_resource type="AudioStreamGenerator" id=2]
 mix_rate = 5500.0
+buffer_length = 1.0
 
 [node name="beetlecar" instance=ExtResource( 2 )]
 mass = 140.0
 script = ExtResource( 1 )
-BASE_ENGINE_PITCH = 0.2
 gear_ratios = [ 2.24, 2.0, 1.89, 1.67, 1.44, 1.23 ]
 final_drive = 5.6
 max_rpm = 8000.0
diff --git a/vehicles/buggy.gd b/vehicles/buggy.gd
index a59ee38..22e31c4 100644
--- a/vehicles/buggy.gd
+++ b/vehicles/buggy.gd
@@ -93,7 +93,7 @@ func _physics_process(delta: float):
 	var transmission_rpm = final_rpm * abs(_get_gear_ratio())
 
 	if gear != 0:
-		rpm = lerp(rpm, transmission_rpm, delta * (1 - clutch_position))
+		rpm = lerp(rpm, transmission_rpm, delta * 10 * (1 - clutch_position))
 		rpm = _lerp_rpm(rpm, min_rpm, delta, delta * clutch_position)
 	else:
 		rpm = _lerp_rpm(rpm, min_rpm, delta, delta)
diff --git a/vehicles/buggy.tscn b/vehicles/buggy.tscn
index d53c35e..7d9b73d 100644
--- a/vehicles/buggy.tscn
+++ b/vehicles/buggy.tscn
@@ -4,7 +4,7 @@
 [ext_resource path="res://vehicles/buggy.gd" type="Script" id=3]
 
 [sub_resource type="Curve" id=2]
-_data = [ Vector2( 0, 0 ), 0.0, 0.0, 0, 0, Vector2( 0.0660377, 0.243255 ), 0.0, 0.0, 0, 0, Vector2( 0.240566, 0.315982 ), 0.0, 0.0, 0, 0, Vector2( 0.429245, 0.925073 ), 0.0, 0.0, 0, 0, Vector2( 0.900943, 1 ), 0.0, 0.0, 0, 0, Vector2( 1, 0 ), 0.0, 0.0, 0, 0 ]
+_data = [ Vector2( 0, 0 ), 0.0, 0.0, 0, 0, Vector2( 0.0660377, 0.243255 ), 0.0, 0.0, 0, 0, Vector2( 0.240566, 0.315982 ), 0.0, 0.0, 0, 0, Vector2( 0.45283, 0.927273 ), 0.0, 0.0, 0, 0, Vector2( 0.891509, 1 ), 0.0, 0.0, 0, 0, Vector2( 1, 0 ), 0.0, 0.0, 0, 0 ]
 
 [sub_resource type="Curve" id=4]
 _data = [ Vector2( 0, 0 ), 0.0, 0.0, 0, 0, Vector2( 0.0849057, 1 ), 0.0, 0.0, 0, 0, Vector2( 0.15566, 0.746591 ), 0.0, 0.0, 0, 0, Vector2( 0.349057, 1 ), 0.0, 0.0, 0, 0, Vector2( 0.382075, 0 ), 0.0, 0.0, 0, 0, Vector2( 0.400943, 1 ), 0.0, 0.0, 0, 0, Vector2( 0.438679, 0 ), 0.0, 0.0, 0, 0, Vector2( 1, 1 ), 0.0, 0.0, 0, 0 ]