Harvey’s Security
On your way back from Arkham Asylum, Alfred will have to pull the car over for Harvey’s security. They’ll tell Bruce that they need to search the car and that they don’t need a warrant due to Harvey’s recent ruling that they have the power to search anything they want whenever they want. Just as you’re talking to the enforcer, a few members of the public will also head over and start shouting abuse at you. At this point, you have two options. You can either pay off the enforcer to get through their barricade, or you can get Alfred to floor it through the barricade and escape without having to pay a penny.
If you choose to pay off the enforcer, you’ll get back to Wayne Manor without a hitch. The same thing also happens if you ask Alfred to ram through the barricades. Though these may ultimately have an effect on something in episode five, this didn’t seem to be all that important in relation to the rest of the episode.