I agree. The 300d I never drive agressively, but I find the car naturally relaxing most of the time.
I have noticed some aggressive tendancies when driving my X5, I hate to admit it.
It all has to do with stress and how people deal with it. Usually a good scream at the top of my lungs does it for me when it really gets bad, but some can't cope.
My worst experience was with road rage was with a woman who pulled out in front of me while leaving a Wal Mart parking lot. I managed to stop in time, but she got out of her car and started screaming at me like it was my fault.
If I knew what a crazy b#$% she was I would have just plowed into her thin drivers door, 90s blazer, and collect full retail on the X5.