On another forum, a member claimed that '60s and '70s Cadillacs had a "bouncy suspension" and "uncontrolled float."
Owning two Cads of that era, I knew that not to be true. At least, not true with the suspension in good condition and no worn-out shocks.
So I made the video below to illustrate.
I pushed on the fender of each car for several cycles and let go quickly. As can be seen, the car on the left ('69) stops moving very quickly. And the one on the right ('76) takes a little longer but is still very acceptable considering it is a limo with a soft suspension.
It would be interesting to see other videos of this type of test.
Link of mine is below:
[ame=http://www.youtube.com/watch?v=Bs8x2LPjRSw]YouTube - 1969 and 1976 Cadillacs.[/ame]