Many years ago, I had a Mercedes 190SL. Return spring wore through in a construction zone on I-8 east of San Diego. That was a white knuckle experience!  No, no redundancy in 1959. 

Karl Wolz
Sent from my electronic umbilicus

> On Jun 14, 2014, at 8:00 AM, Dick Wong <sailingfc@DSLEXTREME.COM> wrote:
> 
> There's always a backup in case one fails.