[Retric]

First those 2600 miles are not absolutely safe, so it is a higher risk than an average trip.

And if you qualify the airline deaths based on journey type then you also need to qualify the car trip by journey type. As he is presumably sober, not tired, using a seat belt, not speeding 30+ MPH over speed limit etc his risks of dying over 10 miles is less than half that of the average 10 miles driven.

So, his risk of death per trip is actually higher when flying.