Speed Buggy with Tinker, Debbie, and Mark

These torso decorations don't exactly match the cartoon, yet, but they give a better impression of how colorfully dynamic the set could appear.  This little set would be a great accessory alongside the bright colors of the Scooby Doo sets.

Here's a prototype of Speed Buggy and his friends in real bricks:

The rear has been reworked to accommodate a compartment to hold an engine with which Tinker can tinker: 

Piece count for this model is around 100 bricks and elements.