What could be a better feeling than beating a world record? Beating your own world record. The Tesla Roadster has put an extra exclamation mark on its world-conquering single-charge antics by raising the bar from 241 miles back in April to an even more impressive 313 this week. As you can see in that homemade "world record" sign above, that's 501 kilometers in metric terms, or pretty much the exact distance between Paris and Amsterdam. The Global Green Challenge in Australia -- where this feat was achieved -- allows only production battery-powered vehicles
