At least a sedan more or less looks like a ramp so if you get hit you'll go up and over, which is still bad, but a lot of the energy is being diffused. Your legs are fucked but maybe you had time to throw your arms up and cover your head before you tumbled over the sunroof.

Meanwhile those SUVs and glamour pickups with their giant front grills are basically battering rams. You're going to get hit with a ton of force and then get sucked right under.