Hi, I'm trying 2 find the name of a movie that I believe was made in the 1970s & was a similar time 2 dirty harry. The plot involved a bus [ similar to the bus used in speed] that got hijacked on an american highway & driven into the dessert full of passengers where it was disabled & then held 2 ransom by the american government ? I was given a sugestion it may have been called hijack on interstate 52 . But no results. Can anybody help please?

Try Detour to Terror (http://www.imdb.com/title/tt0080615/)