41.   But whether navigation systems catch on in the United States remains to be seen.

42.   China, which hopes to build an independent satellite navigation system within the next decade, launched two experimental positioning satellites last year.

43.   Cars will have navigation systems and may take over some of the driving.

44.   Clarion is the newest entry in what promises to be a booming field of navigation systems for vehicles.

45.   Computerized navigation systems are a growing phenomenon in rental cars.

46.   Dashboard navigation systems that display a map and give you directions are becoming increasingly popular.

47.   Delco designs and builds automotive electronics including stereos, collision warning systems, electronic engine controls, navigation systems and air bag and anti-lock brake modules.

48.   Dealer-installed options, including a navigation system, are also available.

49.   During World War II, American forces developed a radio navigation system called LORAN, which has been steadily updated and is still widely used.

50.   Even in Japan, Sony experienced strong sales of some new products like wide-screen televisions, car navigation systems and lithium ion batteries.