The last super-cars standing

The $10 million Progressive Insurance Automotive X Prize competition finished up its final on-track round, and the results are clear: If anyone is going to win the $5 million contest for four-seat cars, it's going to be the Virginia-based Edison2 team. If anyone is going to win the $2.5 million contest for alternative two-seat tandem vehicles, it's going to be the Swiss X-Tracer team. It's only the last $2.5 million - set aside for two-seat, side-by-side cars - that is up for grabs.