Multiple powertrains are available, including a gasoline engine, a hybrid, or a fully electric setup.

Bulgaria's Sin Cars will soon expand its lineup by launching the bizarre S1 as the company's entry-level model. The vehicle largely defies description because Sin intends to offer a mix-and-match selection of body styles and powerplants.

The company's single teaser image shows the S1 as a completely open roadster with no roof or doors. However, that's not the only option. Customers can also get a closed cockpit variant or even a fully exposed fenderless variant with open wheels. "The modular design allows you to update, or change the design of your S1 for the lifetime of the vehicle," according to Sin.

Powertrain details aren't entirely clear, but buyers have lots of choices. "There are gasoline engines up to 450 horsepower, a hybrid, or fully electric" version, according to Sin's announcement. In addition, customers can order a  paddle-shift transmission, traction control, and anti-lock brakes.

Sin will apparently debut the S1 at the 2018 Geneva Motor Show in March, and the company will deliver the first examples in early 2019. The automaker will only call the vehicle's pricing "affordable" at the moment. Sales will initially be in Europe. However, Sin is applying as a low-volume manufacturer with the National Highway Traffic Safety Administration in the United States, which would allow the company to sell 325 road-going examples a year in the country. Otherwise, the S1 would be a track-only product in the U.S.

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