There is definitely some MBZ engineering going on. The cars are not "soft" and don't roll excessively on hard corning. Compared to modern cars I guess our old Benzs have a lot more side wall and lower tire pressure, and it must help.

It's not just modern cars. My '69 Buick needs to slow for speed bumps and I doubt it could sustain 70MPH for hours. The Buick is mostly about converting fuel into noise.

Todd, I grew up in SLO county. My parents now live in Paso. I think San Luis has been adding speed humps since the early '90s - but back then all I drove was a w108 or w114, so I didn't notice them :-). Which reminds me the w116 were pretty good too. Fox body mustangs are not good with speed bumps, but that is another story.