Why is Jose Canseco pissed off at CarMax?

If you've been reading ballplayer-turned-martial-arts-asskicker Jose Canseco's Twitter posts (and of course you have), you already know he's been heartsick over a woman. And you now know he's seriously pissed off with used-car giant CarMax. Canseco's been Android tweeting from Burbank today, damning the used-car giant… » 9/23/11 3:30pm 9/23/11 3:30pm