Hi martian,

You have asked a good question. The thing you need to ask yourself is why do you want to know these numerical values - what decision will the numbers influence? The lifetime risk of dying in a car crash versus in an airplane crash is really not relevant to any decision you need to make. The only comparison I think relevant is:

For a given trip from point A to point B, what is your probability of death if you choose flying and what is your probability of death if you choose to drive. For these comparisons the figures are enormous; we are many many times safer flying. So for each time that I choose to drive rather than fly because I refuse to be manhandled by the TSA, the TSA has caused me to take a larger risk of death. In fact, this is precisely the mechanism by which TSA (and peoples' fear of terrorism, if that's what made them choose cars) has caused a few thousand deaths since 9/11.