Motorized skateboard

The motorized skateboard was an invention of Velma Dinkley's for ground transportation when the gang were kids.

Season one
They went back to the Coolsonian Museum on the skateboard, (since it wasn't in walking distance) to look for clues to clear Shaggy and Scooby of the accusation of stealing valuable Samurai swords. (Now Museum, Now You Don't)

Appearances

 * A Pup Named Scooby-Doo
 * Now Museum, Now You Don't

Notes/trivia

 * Velma seems to find it fun to drive the skateboard. She has an uncharacteristic expression of fierce glee as she runs it.