Don scans the piles of parts on the floor, revising his mental plans, then turns back to Raph with a sharp look.

"Swear to me that you will not go speeding around the city on this thing. Nor tell Leo that we are racing it on the track. Maybe you don't know that when you drive recklessly, he yells at me too. I'm not interested in hearing that lecture again." He crosses his arms. "Do we have a deal?"