If you are a "GROWN" man and asking permission to drive a car YOU bought, You have a SERIOUS problem in your marriage. Been married 7 yrs and I have NEVER had to make an excuse to go drive MY car. You just POLITELY inform your wife that you are going out for a drive. Then you go. When she buys a new pair of shoes does she ask you? NOPE!!!! You just come home and find new shoe boxes there.
Women like to use " a man's fear of no sex" to control your actions. The minute they understand you have NO FEAR of not "getting some" you will see all those little "mind games" they play cease.
The thought that you actually have to "ask permission" or create and excuse to drive a car YOU BOUGHT should have you ashamed of yourself. Man up fellas , MAN UP!!