How can I use Driving Scenario Interactively?

You can set the position and orientation properties directly. Here's an example setting the X position to drive up a straight road.

d = drivingScenario;
road(d, [0 0; 25 0])
v = actor(d, 'Position', [1 0 0]);
plot(d);
for index = 1:0.1:20
    v.Position = [index 0 0];
    advance(d);
    pause(0.01)
end

And Here's an example settings the Yaw with the car appearing to be spinning out

for index = 1:0.1:20
    v.Position = [index 0 0];
    v.Yaw = index*5;
    advance(d);
    pause(0.01)
end