unity C#でほかのスクリプトの変数を取得したいが、コンテキストに存在しませんとエラーが出る。

前提

unityのほかのスクリプトの変数を取得したいのですが、うまくいきません。
https://obenkyolab.com/?p=2294
https://yttm-work.jp/unity/unity_0012.html
https://htsuda.net/archives/1702
これらのサイトを参考にして、以下のようなコードを作ってみました。

C#
1Debug.Log(Cinemachine.CinemachineDollyCart ,m_Speed);

これで、CinemachineDollyCart.csというファイル内のm_Speedという変数を取得できるだろうと思っていたのですが、できませんでした。

エラーメッセージ

error CS0119: 'CinemachineDollyCart' is a type, which is not valid in the given context
error CS0103: The name 'm_Speed' does not exist in the current context

なお、CinemachineDollyCart.csのコードは以下のようになっています。

C#
1using UnityEngine;
2using UnityEngine.Serialization;
3
4namespace Cinemachine
5{
6    /// <summary>
7    /// This is a very simple behaviour that constrains its transform to a CinemachinePath.  
8    /// It can be used to animate any objects along a path, or as a Follow target for 
9    /// Cinemachine Virtual Cameras.
10    /// </summary>
11    [DocumentationSorting(DocumentationSortingAttribute.Level.UserRef)]
12    [ExecuteAlways]
13    [DisallowMultipleComponent]
14    [HelpURL(Documentation.BaseURL + "manual/CinemachineDollyCart.html")]
15    public class CinemachineDollyCart : MonoBehaviour
16    {
17        /// <summary>The path to follow</summary>
18        [Tooltip("The path to follow")]
19        public CinemachinePathBase m_Path;
20
21        /// <summary>This enum defines the options available for the update method.</summary>
22        public enum UpdateMethod
23        {
24            /// <summary>Updated in normal MonoBehaviour Update.</summary>
25            Update,
26            /// <summary>Updated in sync with the Physics module, in FixedUpdate</summary>
27            FixedUpdate,
28            /// <summary>Updated in normal MonoBehaviour LateUpdate</summary>
29            LateUpdate
30        };
31
32        /// <summary>When to move the cart, if Velocity is non-zero</summary>
33        [Tooltip("When to move the cart, if Velocity is non-zero")]
34        public UpdateMethod m_UpdateMethod = UpdateMethod.Update;
35
36        /// <summary>How to interpret the Path Position</summary>
37        [Tooltip("How to interpret the Path Position.  If set to Path Units, values are as follows: 0 represents the first waypoint on the path, 1 is the second, and so on.  Values in-between are points on the path in between the waypoints.  If set to Distance, then Path Position represents distance along the path.")]
38        public CinemachinePathBase.PositionUnits m_PositionUnits = CinemachinePathBase.PositionUnits.Distance;
39
40        /// <summary>Move the cart with this speed</summary>
41        [Tooltip("Move the cart with this speed along the path.  The value is interpreted according to the Position Units setting.")]
42        [FormerlySerializedAs("m_Velocity")]
43        public float m_Speed;
44
45        /// <summary>The cart's current position on the path, in distance units</summary>
46        [Tooltip("The position along the path at which the cart will be placed.  This can be animated directly or, if the velocity is non-zero, will be updated automatically.  The value is interpreted according to the Position Units setting.")]
47        [FormerlySerializedAs("m_CurrentDistance")]
48        public float m_Position;
49
50        void FixedUpdate()
51        {
52            if (m_UpdateMethod == UpdateMethod.FixedUpdate)
53                SetCartPosition(m_Position + m_Speed * Time.deltaTime);
54        }
55
56        void Update()
57        {
58            float speed = Application.isPlaying ? m_Speed : 0;
59            if (m_UpdateMethod == UpdateMethod.Update)
60                SetCartPosition(m_Position + speed * Time.deltaTime);
61        }
62
63        void LateUpdate()
64        {
65            if (!Application.isPlaying)
66                SetCartPosition(m_Position);
67            else if (m_UpdateMethod == UpdateMethod.LateUpdate)
68                SetCartPosition(m_Position + m_Speed * Time.deltaTime);
69        }
70
71        void SetCartPosition(float distanceAlongPath)
72        {
73            if (m_Path != null)
74            {
75                m_Position = m_Path.StandardizeUnit(distanceAlongPath, m_PositionUnits);
76                transform.position = m_Path.EvaluatePositionAtUnit(m_Position, m_PositionUnits);
77                transform.rotation = m_Path.EvaluateOrientationAtUnit(m_Position, m_PositionUnits);
78            }
79        }
80    }
81}
82