The sharp drop in sales of pickup trucks and sport utility vehicles caused overall American auto sales in May to fall 30 percent at G. M. , 28 percent at Chrysler and 19 percent at Ford. G.
Because the craft is excluded from the planetary gravity, the crafts are capable of fantastic acceleration and sharp turns in high speed without the crew inside the craft feeling any G-force effects.
Degree sum conditions of ID-factor-critical graphs are studied. A lower bound for the degree sum of any two nonadjacent vertices such that G is ID-factor-critical is obtained, and the bound is sharp.