The Mercedes logo. (HOMEVID: Zygon: When Being You Just Isn't Enough)
Mercedes was a car company that produced sports cars and vans. Any vehicle produced by this company could be reffered to as a Mercedes.
A wealthy man drove a Mercedes. and Lauren Anderson drove it upon stealing his body. (HOMEVID: Zygon: When Being You Just Isn't Enough)
By 1973, Brigadier Alistair Gordon Lethbridge-Stewart drove a white Mercedes convertible. (TV: The Green Death)
The Seventh Doctor had a Mercedes at Smithwood Manor, along with several other cars, such as a Mazda. (PROSE: Warlock)
In 1939, Nazi party officials were chauffeured in black Mercedes limousines. (PROSE: Timewyrm: Exodus)