I was in Palm Desert this weekend, and the drive was perfect. I was averaging between 90 and 120 mph, with no instability. There is a lot of wind out there, you can tell by all of the windmills getting power from the wind. But I never had any problem with getting tossed around or anything, just took a little more concentration.
Though one thing I did notice is that my steering wheel is vibrating a little again between 45 and 65 mph, but I think it's because I just had my tires rotated and they are worn differently?
2006 E350 w/ 155k miles (Daily Driver)
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)