You are going to hit an offset barrier at 40mph (65km/h), no escape...
Is bigger is better? New Mini or SUV, which would you rather be in?
Crash Testing: MINI Cooper vs Ford F150
For more information on the rise of the SUV have a look at this excellent article by Malcolm Gladwell.
Big and Bad: How the S.U.V. ran over automotive safety.
Maybe I'm just biased against these things. I have to run the gauntlet of people taking their children to school or city commuting in their "safe" monster SUV's. Cars don't come much smaller than mine and their perceived safety becomes a danger for me, other motorists, pedestrians, and cyclists.