What is fastest car?

There's no single answer to "what is the fastest car?" because different cars hold records in different categories (e.g., top speed, quarter-mile time, 0-60 mph). The title often changes as manufacturers develop new models.

However, some contenders for the title of "fastest production car" (meaning a car available for purchase by the public) often include models from manufacturers like SSC, Bugatti, and Koenigsegg. To find the *current* fastest, you'd need to research recent speed record attempts and news from automotive publications.