The Solar Bear is CalSol's first vehicle designed and built after the split of team Stanley. It was raced in the Formula Sun Grand Prix 2003 after CalSol's four year hiatus from solar racing and finished in first in stock class. The rookie team then went on to race in the American Solar Challenge 2003 and finished the 2300 mile cross country journey in second place in stock class.

The Solar Bear features all new design sharing little in common with team Stanley's previous vehicles. Based on a chromoly steel tube chassis, the Solar Bear is a rugged, sturdy vehicle designed to stand the arduous journey westward from Chicago to Los Angeles.