Laser Beam Tractor – from ‘Thunderbirds‘ created by Gerry Anderson

This small International Rescue vehicleis used in the second rescue in ’Thirty Minutes After Noon’ where Scott and Virgil have to get inside a nuclear storage facility in Scotland. It is equipped with a powerful laser beam which they use to cut through the heavy security doors and an air-blower then blasts the newly cut section out of the way, allowing them to drive through. This is the type of tractor that is used on the Booster Mortar 

This vehicle was constructed in its entirety as a puppet scale prop, and as a miniature. As such it was most likely designed by Reg Hill

Take a look at this video; What If Fantasy Model Kit Box Art