Yes...the Citi Virtual Card is a great choice for on-line purchases and I have been using it for years. Makes on-line buying safe and secure.
There are a lot of possibilites if this can be developed. The roof of cars could be solar panel(s). This would be in addition to the electric cars power source and once the cost of producing solar panel comes down perhaps more people will use it on their homes. Of course; it doesn't look good so that could also be a deterent to the look of your home.