Cabriolet engineering: anti-scuttle-shake and pop-up roll bar

The A124 cabriolet is celebrated as one of the most over-engineered convertibles of its era: hand-built, among the most expensive Mercedes of the time, with rubber tuned-mass units that largely eliminate scuttle shake and a 'tombstone' roll bar behind the rear seat that deploys in a rollover. This engineering density is part of both the appeal and the maintenance burden.