One or the other to compete, no hybrids.........either fossil fuel (aka gasoline) or EV not both in one vehicle, Prius is a hybrid and besides it's dog poop slow and would still lose to a 7 mpg big or small block dinosaur '60's muscle car and for sure lose in a drag race to 90% of most current cars.

Hydrogen will eventually kill straight EV's

The rumored Toyota Prius hydrogen variant could turn out as an innovation. The Mirai and the Nexo use a fuel cell in which a chemical reaction of the contained hydrogen with oxygen generates electricity, which powers an electric motor. The next-gen Prius could come with a combustion engine that generates power through the combustion of hydrogen using modified fuel supply and injection systems of gasoline engines.