It seems that Road and Driver and Motor Trend only portray red cars on the covers. In subliminal advertising, you learn that "Red" equates to fast. I like black, too, but it has some bad connotations to it.
That is why almost every fast food restaurant has a logo that is red and yellow. Red, means you'll get your food fast, and yellow equates to satiation. So if you go into McDonalds, Burger King, Wendy's, Roy Rogers or Arbys....you get your food quickly, and you will walk out feeling full and satisfied.
I know...you never knew that, but dammit it's true. They are all red and yellow. Black symbolizes toughness and more importantly, death. That's why most unmarked police cars are black (Chargers, Mustang 5.0's, Challengers, Camaros, etc). They exude authority, and kick ass, and "you will die, if you don't comply" to the nice State Trooper. You don't want a car with a death subliminal message on the cover of your magazine. Maybe an occassional yellow Corvette, or the likes, to show satiation. Especially when men go through their mid-life crisis.
You've seen the commercial. Flash a somewhat nerdy guy at the dealership, then flash the mid-life crisis car, then flash the beautiful girls. In other words, "If I buy this car" I will have beautiful girls knocking down my door while I am playing GTA IV. Cynical but all too true.