The Volkswagen Santana is a sedan version of the Volkswagen Passat, first introduced in 1981, and also known in the Americas as the Quantum (at least in Brazil, only the station wagon version was called Quantum). In Europe the Santana name was dropped in 1986, with the model simply renamed the Passat.
During this time, production of the Santana began in China, with the model available as a sedan and station wagon, which continues today. Similar versions of the same model have remained in production in Brazil and Argentina, where during the early 1990s, the car was also sold as the Ford Versailles.
There has been a particularly clear treatment of time travel in the context of quantum mechanics by David Deutsch (see Deutsch 1991, and Deutsch and Lockwood 1994) in which it is claimed that quantum mechanical considerations show that time travel never imposes any constraints on the pre-time travel state of systems.
Thus quantum mechanics comes to the rescue: it shows in all generality that no constraints on initial states are needed!
Now it is not at all clear that this is a legitimate way to simplify the problem of time travel in quantum mechanics.
The first fine gentlemen and ladies to actively study the phenomenon of random (you know, quantum) are to be exalted.
When questioned, they will state that they had seen a VW Bug and hence proceeded to beat each other up.
For example, shrieking "white rabbit!" while assaulting the driver of a VW Bug on the first of the month is definitely a crossed meme; but it is also likely to attrack the attention of a cross Police Officer.