Complex sentence: Jim's, best known for its breakfast and charbroiled Frontier Burgers, was started in 1947 when founder G. Jim Hasslocher built his first burger stand, which became a drive-in burger concept with carhops and eventually led to full-service restaurants in several locations.
Split into simpler sentences: Jim's, best known for its breakfast and charbroiled Frontier Burgers, was started in 1947 when founder G. Jim Hasslocher built his first burger stand. The burger stand grew and became a drive-in burger concept with carhops, which eventually led to full-service restaurants in several locations.