Question

The prices on hybrid, plug-in hybrid, and all-electric cars are high because of the high cost of their ____.

Answer 1

The prices on hybrid, plug in hybrid, and all-electric cars are high because of the high cost of their production. With time and more demand the prices will fall dramatically as can already be seen throughout the industry. Some countries, like Norway, are or are close to a majority of cars being some form of electric powered. The biggest factor in the cost of production are the large batteries that are stored in the car.

Answer 2

I believe the answer is batteries
Hybrid cars tend to had the capability to run more power in its machine to achieve more speed and travel more distances.
The batteries needed for this type of Cars are harder to made and need more expensive materials/features.