Car Questions

• What are some other ways to save energy in a car besides turning off the air conditioner and rolling down the windows?
• What would happen if you drove your car close to the speed of light and turned on the headlights?
• Why do car tires protect you from lightning strikes?
• Why does air friction affect a car's gas mileage?
• Why is a 12-volt household battery harmless, but the shock from a 12-volt car battery will kill you?