Togusa pulls away from the curb, because if he's driving, he doesn't have to look at him. He is putting all of his effort into trying to keep his voice even. "Let me make sure I've got this absolutely straight." Those Adult Words that mean that what comes next is about to be a trap.

"You shoved a human body part. Your human body part, excuse me. Lit on fire. Into an enclosed space that Retrospec has set aside to put in their mystery grab bag items." Pause. Which means here comes the trap.

"When you know that a bunch of the things they're putting in on their end are firearms and other explosive bullshit." Now he finally looks away from the road for a split second to side-eye James. "Really?"