He catches a glimpse of what looks kind of like a blast from one of Iron Man's disruptors as the car clears a rise and responds automatically, pushing off against the roof in a leap forward. The momentum as the car's hit by whatever-the-fuck weapon Klaue's using flings him into a long falling arc. Bucky hits rolling, shoves his left hand against the asphalt to come up on his feet running.

A glance over his shoulder's enough to see that the two women are okay - that's one hell of a car - and he accelerates to his full speed in pursuit, looking for another vehicle he can commandeer as he runs.