I definitely "suffer" from the same syndrome, but I don't consider it detrimental to my job. The way I look at it, bike commuting is simply how I get to work and back, and it shouldn't bother anyone how I do that. We have flex time in my office, so if I need to come into work late and leave late, that is fine, or vice versa. I do drive on days when the weather is poor or unsafe for cycling, or when I need my car for appointments or meetings. I try not to feel guilty about driving, however, because I've reduced my annual driving by about 5,000 miles/year since I start bike commuting. Sometimes I drive simply because my legs are tired and need a break. I drove on Monday this week, even though the weather was perfect for cycling, because I rode 200+ miles last week and I was physically tired.