I'm not impressed one bit. A 20 year life span is nothing compared to the lifespan, speed with which you can fill it and the fact you can fill it 100%. Don't forget a gasoline tank is a simple hollow container that sits in an area of the car where it's protected in the event of an accident. Gasoline tanks are also cheap to replace should it ever be necessary.
What's the point in buying a vehicle where a significant percentage of the financed price is dedicated to soring the fuel that powers the vehicle rather than to enhancing the performance and longevity of the vehicle?
E.V.'s are a scam. When you come down to it cars are about physics. Body design, weight, airflow, friction of the tires on the road etc. The power source is a matter of weight, energy density, durability, expense etc.
Having a battery powered car makes as much sense as an employer devoting twice the footage of his retail space to bathrooms. The economics of fuel source favors petrol as opposed to electricity for reason of physics and the plain fact that electricity isnt a fuel. It is a manufactured product that yields less net energy to the system every step of the way.