About the Cayennes in ditches, my bet would be the drivers. Think of it this way... how many CARS do you see in ditches? Not many... it's always SUVs and trucks. I thought SUV's and trucks were supposed to be big mean rugged machines? Aren't cars supposed to have trouble driving up a curb? This is the attitude of most drivers, and the reason why trucks and SUVs are in ditches. Their drivers think they are invincible and can go anywhere, at any speed, in any weather. I would guess Cayenne owners are the same. They think that because they are in a Porsche (AND an SUV!), they can drive wrecklessly, fast, and ignor any precautions they should take based on weather, driving, and road conditions. As a result, these invincible people in their invincible vehicles get a reality check with mr. guardrail.