If she's that much under the thumb of her husband, this may be the husband's way of making her give up custody by forcing the issue. Then you come in and complain, the court finds in your favor, you get the kid, and YOU'RE the bad guy (in their eyes) who took away her child.
If he's that bad, your son is better off out of that household, so it may work out for the best regardless.
For those quibbling about the 10 miles, the way these things go with some people is that of COURSE she's going to say she'll do all the driving (because the court will insist on it). Until she doesn't feel like it one day, and he has a test, so she has him call Daddy. And that becomes frequent. Or there's an after school sport he wants to play, but she says no because of the driving, and tells him if his father won't drive him, then he can't play, and he can blame dad, etc. etc.
If he's that bad, your son is better off out of that household, so it may work out for the best regardless.
For those quibbling about the 10 miles, the way these things go with some people is that of COURSE she's going to say she'll do all the driving (because the court will insist on it). Until she doesn't feel like it one day, and he has a test, so she has him call Daddy. And that becomes frequent. Or there's an after school sport he wants to play, but she says no because of the driving, and tells him if his father won't drive him, then he can't play, and he can blame dad, etc. etc.