Houston ? A stunt by a Houston radio station failed to drive Roger Clemens back into baseball.

Clemens said Monday he still was retired, turning down a luxury sport-utility vehicle offered by a Houston car dealer in exchange for joining his hometown Astros. But Clemens didn’t rule out changing his mind.

“You guys are going to have to hang onto your Hummer because nothing’s changed,” Clemens told KKRW-FM shortly before the deadline set by the classic rock station’s morning show hosts. “I’m retired right now.”

Astros owner Drayton McLane isn’t closing any doors, either. Having already agreed to a $31.5 million, three-year contract with Andy Pettitte, McLane wouldn’t mind adding Pettitte’s former New York Yankees teammate.

“I’d certainly be interested in opening discussions,” McLane said. “He’s retired right now so there is no urgency.”

McLane said he would like to get an exchange going, possibly as soon as the weekend.

The Astros gained flexibility with their payroll when they traded closer Billy Wagner and his $8 million salary, then lost much of it when they took on Pettitte’s contract. Adding Clemens to the mix would stretch the Astros’ purse strings even more.

“If Roger is interested, we’d have to see what the economics of it would be,” McLane said.

The Yankees gave Clemens, 41, a Hummer as a retirement gift, and when he was asked about the possibility of coming out of retirement he joked that he might have to return it.

Local disc jockeys Dean and Roger had the idea that they could get him another one.

Car dealer Lee DeMontrond responded to their call Friday by driving the Hummer to Clemens’ Houston home. He could keep the burnt orange vehicle — the school color of Clemens’ alma mater, the University of Texas — if he made a decision on the Astros by late Monday morning. The deadline passed and Clemens remained retired.