Creating a detailed SVG image of a pelican riding a bicycle involves several steps, including designing the pelican, the bicycle, and their interaction. Below is a simplified version of such an SVG. Please note that this is a basic representation and might not capture all the nuances of a realistic scene.

```xml
<svg width="400" height="400" xmlns="http://www.w3.org/2000/svg">
  <!-- Background -->
  <rect x="0" y="0" width="400" height="400" fill="#F0E68C"/>

  <!-- Pelican -->
  <g transform="translate(50, 20)">
    <!-- Body -->
    <ellipse cx="0" cy="30" rx="40" ry="20" fill="#64B5F6"/>
    <!-- Head -->
    <path d="M0,-10 A20,20 90 0,1 20,30" fill="#64B5F6"/>
    <!-- Eyes -->
    <circle cx="5" cy="15" r="2" fill="black"/>
    <circle cx="25" cy="15" r="2" fill="black"/>
    <!-- Beak -->
    <path d="M20,25 C30,40 50,40 60,25" fill="#B8860B"/>
    <!-- Wings -->
    <path d="M0,30 L0,70 L40,70 Z" fill="#64B5F6"/>
    <path d="M60,30 L60,70 L100,70 Z" fill="#64B5F6"/>
  </g>

  <!-- Bicycle -->
  <g transform="translate(200, 150)">
    <!-- Frame -->
    <rect x="0" y="0" width="80" height="60" fill="#8FBC8F"/>
    <!-- Wheels -->
    <circle cx="40" cy="30" r="10" fill="#8FBC8F"/>
    <circle cx="40" cy="50" r="10" fill="#8FBC8F"/>
    <!-- Handlebars -->
    <rect x="60" y="40" width="10" height="20" fill="#8FBC8F"/>
    <!-- Pedals -->
    <circle cx="50" cy="70" r="5" fill="#8FBC8F"/>
    <circle cx="65" cy="70" r="5" fill="#8FBC8F"/>
  </g>

  <!-- Interaction -->
  <g transform="translate(100, 80)">
    <!-- Pelican on bicycle -->
    <ellipse cx="0" cy="30" rx="15" ry="10" fill="#64B5F6"/>
    <!-- Bicycle wheel contact -->
    <circle cx="55" cy="35" r="5" fill="#8FBC8F"/>
  </g>
</svg>
```

This SVG code creates a whimsical scene where a pelican is riding a bicycle. The pelican is represented with simplified shapes for the body, head, eyes, beak, and wings. The bicycle includes a frame, wheels, handlebars, and pedals. The pelican is shown perched on the bicycle, with an ellipse representing its body on the bike and a small circle indicating the contact point with a bicycle wheel. 

You can adjust the dimensions, colors, and shapes to better fit your vision of the scene. This example uses basic SVG elements and paths to construct the image, which can be further refined for more detail.

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