This paper model is Bessie, the Third Doctor's main mode of transport during his exile on Earth, although other incarnations of the Doctor have also used the car, based on the British sci-fi television series Doctor Who, the paper model created by mikedaws.
A canary-yellow Edwardian roadster, she was a key part of his compensation package from UNIT, and the only specific demand he made of the Brigadier when he agreed to be UNIT's scientific advisor. Despite being beloved by the Doctor, the car was frequently ridiculed and underestimated by the Doctor's friends. Heavily tricked out, the car's many modifications often bewildered his associates. The Brigadier in particular was dismissive of the car's abilities and, at least early on, didn't even believe it was capable of basic locomotion. [Source: wikia]