diff --git a/vehicles/beetlecar.tscn b/vehicles/beetlecar.tscn
index e4660b9..90f2e35 100644
--- a/vehicles/beetlecar.tscn
+++ b/vehicles/beetlecar.tscn
@@ -46,12 +46,13 @@ radial_segments = 4
 rings = 3
 
 [node name="beetlecar" groups=["car"] instance=ExtResource( 2 )]
-mass = 340.0
+mass = 850.0
 script = ExtResource( 1 )
-max_steer_input = 40.0
-max_engine_force = 100.0
-max_brake_force = 60.0
+max_steer_input = 35.0
+max_engine_force = 400.0
+max_brake_force = 90.0
 base_engine_pitch = 0.38
+expected_max_speed = 170.0
 gear_ratios = [ 2.99, 2.5, 1.98, 1.56, 1.32, 1.12 ]
 final_drive = 4.0
 max_rpm = 8000.0
@@ -64,9 +65,10 @@ use_as_traction = true
 wheel_roll_influence = 0.01
 wheel_radius = 0.38
 wheel_rest_length = 0.3
-wheel_friction_slip = 12.0
+wheel_friction_slip = 2.0
 suspension_travel = 0.3
 suspension_stiffness = 12.0
+suspension_max_force = 4000.0
 damping_compression = 0.75
 damping_relaxation = 0.8
 
@@ -97,9 +99,10 @@ use_as_traction = true
 wheel_roll_influence = 0.01
 wheel_radius = 0.38
 wheel_rest_length = 0.3
-wheel_friction_slip = 12.0
+wheel_friction_slip = 2.0
 suspension_travel = 0.3
 suspension_stiffness = 12.0
+suspension_max_force = 4000.0
 damping_compression = 0.75
 damping_relaxation = 0.8
 
@@ -111,9 +114,10 @@ use_as_steering = true
 wheel_roll_influence = 0.01
 wheel_radius = 0.38
 wheel_rest_length = 0.3
-wheel_friction_slip = 10.0
+wheel_friction_slip = 1.8
 suspension_travel = 0.3
 suspension_stiffness = 12.0
+suspension_max_force = 4000.0
 damping_compression = 0.75
 damping_relaxation = 0.8
 
@@ -123,9 +127,10 @@ use_as_steering = true
 wheel_roll_influence = 0.01
 wheel_radius = 0.38
 wheel_rest_length = 0.3
-wheel_friction_slip = 10.0
+wheel_friction_slip = 1.8
 suspension_travel = 0.3
 suspension_stiffness = 12.0
+suspension_max_force = 4000.0
 damping_compression = 0.75
 damping_relaxation = 0.8
 
diff --git a/vehicles/buggy.tscn b/vehicles/buggy.tscn
index e362e64..cf83667 100644
--- a/vehicles/buggy.tscn
+++ b/vehicles/buggy.tscn
@@ -45,10 +45,10 @@ radial_segments = 4
 rings = 3
 
 [node name="buggy" groups=["car"] instance=ExtResource( 1 )]
-mass = 400.0
+mass = 1400.0
 script = ExtResource( 3 )
-max_engine_force = 160.0
-max_brake_force = 80.0
+max_engine_force = 1250.0
+max_brake_force = 220.0
 throttle_power = 10000.0
 max_rpm_loss_ps = 4000.0
 base_engine_pitch = 0.45
@@ -86,11 +86,10 @@ transform = Transform( 1, 0, 0, 0, 0.351841, -0.93606, 0, 0.93606, 0.351841, -0.
 script = ExtResource( 4 )
 
 [node name="front_left" parent="." index="1"]
-use_as_traction = true
 use_as_steering = true
 wheel_radius = 0.6
 wheel_rest_length = 0.68
-wheel_friction_slip = 2.0
+wheel_friction_slip = 2.7
 suspension_travel = 1.2
 suspension_stiffness = 4.5
 suspension_max_force = 14000.0
@@ -103,11 +102,10 @@ shape = SubResource( 11 )
 
 [node name="front_right" parent="." index="4"]
 transform = Transform( 1, 0, 0, 0, 1, -1.50996e-07, 0, 1.50996e-07, 1, -0.950754, 0.503756, 1.41438 )
-use_as_traction = true
 use_as_steering = true
 wheel_radius = 0.6
 wheel_rest_length = 0.68
-wheel_friction_slip = 2.0
+wheel_friction_slip = 2.7
 suspension_travel = 1.2
 suspension_stiffness = 4.5
 suspension_max_force = 14000.0
@@ -121,7 +119,7 @@ transform = Transform( -1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0 )
 use_as_traction = true
 wheel_radius = 0.6
 wheel_rest_length = 0.68
-wheel_friction_slip = 1.9
+wheel_friction_slip = 2.1
 suspension_travel = 1.2
 suspension_stiffness = 4.5
 suspension_max_force = 14000.0
@@ -133,7 +131,7 @@ transform = Transform( 1, 0, 0, 0, 1, -1.50996e-07, 0, 1.50996e-07, 1, -0.950755
 use_as_traction = true
 wheel_radius = 0.6
 wheel_rest_length = 0.68
-wheel_friction_slip = 1.9
+wheel_friction_slip = 2.1
 suspension_travel = 1.2
 suspension_stiffness = 4.5
 suspension_max_force = 14000.0
diff --git a/vehicles/bugmobile.tscn b/vehicles/bugmobile.tscn
index 8bc2e46..455233c 100644
--- a/vehicles/bugmobile.tscn
+++ b/vehicles/bugmobile.tscn
@@ -53,10 +53,10 @@ radial_segments = 4
 rings = 3
 
 [node name="bugmobile" groups=["car"] instance=ExtResource( 2 )]
-mass = 600.0
+mass = 1900.0
 script = ExtResource( 3 )
-max_engine_force = 320.0
-max_brake_force = 95.0
+max_engine_force = 1400.0
+max_brake_force = 230.0
 throttle_power = 8000.0
 max_rpm_loss_ps = 2200.0
 base_engine_pitch = 0.65