with a felony. How is driving with a 0.147 any different than blindly shooting a gun into a sparsely crowded room?
Most NHTSA studies on BAC and impairment only go up to 0.1 because above that is where people are severely impaired, with 0.21 being the onset of lack of responsiveness and/or being "black out drunk".
You also have to take into consideration that depending on when he took his last drink, his BAC could have still been rising.
At 0.15, you are 380 times more likely to be involved in an accident than a sober driver.