1. HE MUST BE A GOOD DRIVER.
If your guy isn’t a good driver when the only thing distracting him from the road is the radio, you probably don’t want to suck him off while he’s behind the wheel. While your guy crashing his car because of your incredible sucking skills may seem flattering, he would probably always hold it against you for causing him to ruin “his baby.” Plus just think of what would happen if the airbag went off while you were down there. I’m going to say that’s something you don’t want to experience.