But it's not adjusted. Deaths per mile based on what? The current air and car traffic. And that's already not equitable.
Yes, deaths per mile based on the current air and car traffic. And guess what! All other things being equal, the deaths per mile
would stay the same for each if the air traffic increased enough to equalize them number of plane and car trips. Except all other things wouldn't be quite equal: The sky would be more crowded, so accidents might increase somewhat simply because there are more planes in a limited space and they'd be more likely to crash into each other. That would definitely be cause for concern -- IF the air traffic ever suddenly increased by that amount. It's NOT something to worry about, nor something that affects the stats, if you're flying under current conditions.
So the way to calculate it is not by accidents/deaths per year but by deaths per mile. If you were traveling to Philadelphia, and you could either go by car or by plane, which way would you be more likely to die? And the answer is, by car.
There might be other advantages to going by car: it's cheaper, you see more scenery, it's more comfortable. But safer? No.
But since you're someone who says you're uncomfortable about the safety of flying, you seem very committed to believing that's the more dangerous mode of transportation. And the fact is, you're welcome to believe anything you want.