A man in a vehicle is pointing at something.
A man is pointing to his destination as he drives.
The man is pointing to something but it isn't necessarily his destination. He isn't necessarily the one that drives just because he is in a vehicle.
exists e1 x1 x2 x3.(at(e1,x3) & n_thing(x3) & Actor(e1,x1) & v_point(e1) & in(x1,x2) & n_vehicle(x2) & n_man(x1))
exists e2 e1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_drive(e2) & n_thing(x4) & to(e1,x3) & as(x3,x1) & n_male(x1) & n_male(x1) & n_destination(x3) & of(x3,x1) & Actor(e1,x2) & v_point(e1) & (x1 = x2) & n_man(x1))