Sure, he's the boss, and his vehicle is an impressive-looking killing machine, but the music and title suggest that it's mostly just an act. He's gotta look tough for the sake of his followers. Perhaps no one will bother him and his crew if he can convince enemies that he's not to be messed with. By the time your party reaches this battle, you realize your opponent is trying his hardest to win, but doesn't have it in him to really finish the job, and, in turn, you spare his life when you are finally victorious. Perhaps, he will have a chance to return the favor later on in the game, but, if he does, let's hope his machine is given a better name by then.
I wouldn't be surprised if the Deathmobile fight became one of the most memorable throughout the adventure.
As always, thank you, Bertn.