I mean being a passenger in someone elses car!
But that's
not what you outlined in the scenario: "You are driving your car alone" <img src="/images/graemlins/confused.gif" alt="" />
However, to answer anyway: I have a ResQMe tool secured via a short lanyard to the gear shift lever in both our vehicles. It is mounted in such a way as to be accessible to either hand, right side up or upside down. So, that's one possible solution.
Another would be to use the Spyderco clipped in my left front pocket, or the Microtech or Emerson blade in my right rear, or, last, but not least, the blade on the Vic SAK in my R front pocket.
Before you protest (or change the scenario again... <img src="/images/graemlins/blush.gif" alt="" />), let me state that I do practice getting those knives out & deployed from time to time--throughout the year, to adjust to different clothing worn, too.
Also, if it's cold enough for a jacket, I also keep a blade in my winter coats. They're accessible to either hand, even when buckled in. I even have a Gerber 200 LST as a zipper pull on one of them.
Hmmmm...I've been wondering what that clanking noise was when I walk...
David <img src="/images/graemlins/grin.gif" alt="" />