Mini rocket

From Tardis Wiki, the free Doctor Who reference

A Mini rocket was a form of rocket craft found in the 22nd century. They were very small and agile, but could only fit up to three passengers and were easily damaged.

The Second Doctor, John and Gillian found a mini rocket from 2150 on display in the Time Museum; after they came under attack by Cybermen, they attempted to use the craft to get away. Though the Doctor's swift piloting confused the Cybermen for a time, he was unable to find a way out of the Museum, and the mini rocket was eventually shot down. (COMIC: The Time Museum)

The Space Security Service used a type of mini rocket that was described as a space car and could carry two people. High ranking SSS agents were each given their own mini rockets. The K9 Interplanetary Rocket could carry four mini rockets in its hold and was faster than a single vessel. The mini rocket was powered by Carson anti-grav and did not need fuel of any kind. It could be remotely controlled and would travel to a black box possessed by an agent that would emit a homing beam. (PROSE: Top Secret)