WASHINGTON, Jan. 7 — Ratcheting up the debate over sport utility vehicles, new television commercials suggest that people who buy the vehicles are supporting terrorists. The commercials are so provocative that some television stations are refusing to run them. Patterned after the commercials that try to discourage drug use by suggesting that profits from illegal drugs go to terrorists, the new commercials say that money for gas needed for S.U.V.'s goes to terrorists. "This is George," a girl's voice says of an oblivious man at a gas station. "This is the gas that George bought for his S.U.V." The screen...