minor cleanups and tweak

src/bike/components.rs

@@ -33,13 +33,13 @@ impl Default for WheelConfig {
             front_forward: 0.8,
             rear_back: 1.1,
             y: -0.1,
-            limits: [-0.7, 0.1],
+            limits: [-0.5, 0.1],
-            stiffness: 90.0,
+            stiffness: 50.0,
             damping: 8.0,
             radius: 0.3,
             friction: 1.2,
             restitution: 0.8,
-            density: 0.9,
+            density: 0.6,
         }
     }
 }

src/bike/wheels.rs

@@ -96,7 +96,7 @@ pub fn spawn_tires(
 
         let axel_parent_entity = if let Some(steering) = steering {
             let neck_builder =
-                RevoluteJointBuilder::new(Vec3::Y).local_anchor1(Vec3::new(0.0, 0.0, 0.1));
+                RevoluteJointBuilder::new(Vec3::Y).local_anchor1(Vec3::new(0.0, 0.0, 0.1)); // this adds another 0.1m of trail
             let neck_joint = MultibodyJoint::new(fork_rb_entity, neck_builder);
             let neck = commands
                 .spawn(RigidBody::Dynamic)

src/ui.rs

@@ -12,8 +12,6 @@ use crate::bike::CyberBikeBody;
 struct UpText;
 
 fn setup_ui(mut commands: Commands, asset_server: Res<AssetServer>) {
-    //commands.spawn(UiCameraBundle::default());
-
     commands
         .spawn(TextBundle {
             style: Style {