Carmakers converted their production to open drivelines because of the "baby chicken" concept- - - - - -open drivelines are "CHEEP- - - - -CHEEP- - - - -CHEEP" to manufacture. They're nowhere near as reliable or durable as a well-designed torque tube, but they cost a lot less to make. Today's cars and trucks aren't made to last much beyond the warranty period, so open drivelines and multiple universal joints work well when they're expected to last "the life of the vehicle"- - - -which is engineered to be six months past the warranty coverage!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!