There is NO comparison between engine failure in a car vs. a plane. I regret having to point that out, I thought it should be obvious to anyone with even the slightest notions about flying.
Indeed.
In an aircraft, after shoving the nose forwards you've probably got minutes to think about it, decided what to do, plan, then act.
In a car (and this has happened to me twice) you've got to barge your way through however many lanes of nose-to-tail juggernauts with no means of indicating to them that you are not under full control. It isn't fun - you're dealing with seconds and feet, not miles and minutes.