You'd think after a stern talking to that Bucky would be better about using his words, but. It'll take a few reminders, and likely a few personal experiences, before he gets better about warning before manhandling.

"I didn't floor the pedal. If the engine blows up it'll be a difficult walk back for you." And for Bucky too, actually, but he doesn't yet fully understand the limitations of this body. He's still surprised by how easily he tires himself out, just working in the stables or running himself ragged all day. It'll take him a while to really know his own limits.

"I'm going to scout the perimeter. Can I leave you here or...?" Honestly, Arthur looks stupid shoving at the invisible barrier like a mime on stage, but Bucky manages to sound his usual level of serious-borderline-irritable. Far be it from him to stop him from feeling the air up and putting his back into it.