The aluminum makes it light, which improves gas mileage. But, the aerodynamics are lousy, which negates the gain from the aluminum. Give me a sleek steel drive any day.
I love this external hard drive. Got it a while back from woot and I am just loving it. maybe not as much as my Ps3 is, got so much crap stored on this formated to fat32 three partions about to make a fourth one cause I can and need too.