Stretch object based on its speed and movement direction (original by @_pikopik https://twitter.com/_pikopik/status/882346033656844288) #Unity

DynamicScale.cs

using UnityEngine;
 
[ExecuteInEditMode]
public class DynamicScale : MonoBehaviour
{
    Vector3 lastPosition;
 
    void Start()
    {
        lastPosition = transform.position;
    }
   
    void LateUpdate()
    {
        Vector3 delta = transform.position - lastPosition;
        transform.localRotation = Quaternion.LookRotation(delta + Vector3.forward * 0.001f);
        float l = 1f + delta.magnitude;
        float wh = Mathf.Sqrt(1f / l);
        transform.localScale = new Vector3(wh, wh, l);
 
        lastPosition = transform.position;
    }
}