and leonard bernstein. laurents fighting pneumonia when he died in his new york apartment. he was 93 years old. >>> this week the cost of a gallon of gas hit an all-time spring high and suddenly oil plunged below $100 a barrel. will gas prices follow? and could it mean relief at the pump, finally? matt gutman takes a look. >> reporter: all-time highs in four states and 24 other states are within pennies of their records. hawaii still has the nation's most expensive gas, but the nation's heartland is catching up. >> these prices are crazy. i've put $20 in here and by the time i get home, it will be gone. >> reporter: national average may have peaked short of the $4 mark. oil and gasoline futures collapsed. crude oil tumbled nearly 9% to less than $100. its lowest price in almost two months. gasoline futures which helped determine the price at the pump down 23 cents. >> i'm hopeful that in average places, prices will drop as much as 20 cents here in the next seven to ten days. >> reporter: so why the dramatic drop? it's partly due to sagging demand. americans are already driv