Works even better because the "OTA" basic Comcast isn't HD.
You need a CableCard, but you can get OTA channels in HD with basic Comcast service... although my understanding is there may be differences in some regions.
Don't bother. Some people will just keep screaming that electric will never work.
Don't confuse electric with batteries. I love the idea of electric, but I don't think (current, at least) batteries are the way to get there. IMO, history will show more negatives than positives with battery-powered cars.
If you push the "extra ice" button on the soft drink vending machine, you won't get any ice. If you push the "no ice" button, you'll get ice, but no cup.