Complex sentence: He began drag racing in the Stock division at Fremont Raceway in 1964 and made a jump up to funny cars in 1965, driving a nitromethane injected Hercules Nova.
Split into simpler sentences: He began drag racing in the Stock division at Fremont Raceway in 1964. He made a huge jump up to funny car in 1965, driving a nitromethane injected Hercules Nova.