The cost of ownership of one of the cars I had in the past can run up to $100,000 depending upon how long you own and maintain the vehicle. Once you pay for a chevy volt it almost instantly starts paying you back, from the $7500 GEORGE W. BUSH tax credit, to the $250 /mo you save in gas."I don't want to go into that."Woods's motherinlaw Barbro Holmberg also refused to address the matter."She doesn't want to comment on private issues like these," Holmberg's spokeswoman Eva Malmborg said.Asked at a Friday evening news conference if the couple could have been arguing, Saylor said he had no knowledge of that. The couple, married five years, have two children.The accident came two days after the National Enquirer published a story alleging that Woods had been seeing a New York night club hostess, and that they recently were together in Melbourne, where Woods competed in the Australian Masters.The woman, Rachel Uchitel, denied having an affair with Woods when contacte