
If you look at "safety" as only one dimension (weight) than is an SUV really that much "safer?" What if you're rear-ended by a 40,000 pound tractor-trailer? Or worse, T-boned? Of course the SVU is "safer" than a car by this measure, but by how much?
If you take a more holistic view of safety and include the vehicle's manuverability (ability to avoid and accident), plus the driver's skill level, small cars may actually be just as "safe" or even "safer" than an SUV. Inexperienced drivers have a MUCH higher incidence of accidents than experienced ones, and sports cars can corner more sharply and come to a stop in a much shorter distance, whereas SUVs take a much longer distance to come to a stop, and have a nasty tendency to roll if they corner too sharply.
So, take the extra money you're going to have to spend on an SUV and sign-up for some defensive driving classes.
"The eleventh commandment was `Thou Shalt Compute' or `Thou Shalt Not Compute' -- I forget which." -- Epigrams in Programming, ACM SIGPLAN Sept. 1982