I think if I were to record the BCS books on audio then listen to them in my car I would violate many laws including a violent road rage rampage and some serious destruction of property.😡
A lot of review courses have some audio to go with them that would likely be much more high yield and easier to digest. Try to get your hands on one of these if you can. I have one from the San Antonio course a few years back, put it in my iPod and got some real mileage out of it.