Cars are judged on both design and racing ability. The sprint is sponsored by Argonne National Laboratory, Case New Holland Corp., Siemens Solar Industries and the Chicago Section of the Society of Automotive Engineers.
All cars use identical solar-electric panels and electrical motors.
Cars are restricted to about shoebox size and must be powered entirely by the sun. Design judging begins at 10 a.m., and racing begins at 11 a.m. The double-elimination racing event usually takes about an hour to complete. The public is invited to attend. Rain date will be Saturday, May 13.