New Cadilac CT6... Pugin option?

Like the Chevy Volt of 2016, announced that a Plugin Version of this car is coming in 2017 and will get similar all Ev range as 1st gen Volt. This would work perfect with a city "NO Gas ban" just saying you can use it on the hwy and keep your battery full and switch when entering a downtown area and drive for a few hours no problem. I do so with my volt and find it necessary since my volt is much more efficient while operating on Electric while in the city verses the generator turning on and off over and over again. 25mpg vs. 37-38mpg.

Great idea that has true value for limo providers and the air quality of pedestrians in the city.