In Solo you are competing against the clock. The objective is simply to drive around the track in the fastest possible time. Unlike traditional road racing, you are not driving door-handle to door-handle with your fellow competitors, so the chances of damaging your vehicle are greatly reduced.
Competitors are released onto the course one at a time. Cars are classed with similar cars, so a Corvette is not competing against a Chevette.
Ice racing is staged on a local lake in the West Michigan Area. Autocross is generally staged on a large parking lot.