Its high-capacity battery system offers the option to plug into a regular household electrical outlet for an additional power source. The result: Sonata Plug-in Hybrid relies more on electric-only operation to deliver extended driving range and MPG. The vehicle will be distributed and stocked at Hyundai dealerships located in 10 states. Here’s the list. People residing outside of these 10 states can custom order their Sonata Plug-in Hybrid from their local Hyundai dealership.