The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.
Annual mileage is going to be different for everyone. Granny Smith may only put 3,000 miles a year on her Buick driving to and from church, but a traveling businessperson could easily rack up 30,000 miles in a year. 2004 U.S. Census data lists passenger cars as traveling an average of 12,500 miles per year.