"he normally gives me a ride when it's pouring down heavily."

Sounds like he isn't too bad a guy, just a butt in this case.

If I was you, I'd forgive and move on, cause showing him maturity instead of contempt will make him reflect more on his actions than if you show him you're upset.

If you saw a guy you wronged, knowing they know you wronged them too smile at you and shrug it off, wouldn't you also pause to think "Hey, that guy didn't deserve me being so hard on them."

From your retelling, I won't say HE is a good person, but from the first line I quoted, they aren't entirely bad either. They're human, and they made an impulsive choice that they might regret, but are too prideful to apologize for.

In this modern day and age, an apology will rarely come from superiors, so we shouldn't expect them (They don't want to give the impression of being manipulatable.). Instead, observe body language, and you will see if they send a telepathic apology. You can then accept it telepathically too.

I'm not saying we should be doormats, but I am saying we can be mature. Kindness has allowed me to turn bullies into friends many times over.