Protect-O-Bot

The Protect-O-Bot was a prototype of protectron which was never released by RobCo.

Background
Excerpt from the description in the REPCONN Headquarters museum:

 "Some folks have asked - why not a protectron with wheels? RobCo wasn't afraid to answer that question: The Protect-O-Bot is the answer. While safety standards prevented this free-wheeling dynamo from entering mass market production despite RobCo's best intentions and teams of lawyers, we take the consolation in letting you can see this extremely well-funded experiment as it was intended - a robot moving so fast it looks like it's standing still!

Exhibit Brought to You By Your Friends at RobCo"

Characteristics
It's a protectron with a car-type design, with wheels rather than normal legs, and a dynamo accelerator. It looks a lot like the torso and head of a regular protectron, with the wheels and legs of a sentry bot, though laying down instead of being upright.

Locations

 * A prototype can be seen in the REPCONN Headquarters in a state of disrepair, as an exhibit in a museum.