Detroit Three report another sales drop in March

Spring may be bringing warmer weather to much of the country, but it's apparently doing very little to thaw a frozen market for new cars. The three biggest U.S. automakers all posted huge declines in March sales compared with last year.

General Motors (GM) said sales fell 45 percent last month compared with a year ago. At Ford (F), sales plunged 41 percent, and Chrysler reported a 39 percent drop. The big Japanese automakers fared little better.