Lulu wouldn't have said "That's not physically possible" if he just saw his guards stop and Rollo drive around them, and instead of being freaked out and panicing he'd be wondering why his guards were yelling about Rollo's super speed when Rollo obviously hadn't used any
the problem is that everyone (even people not within the radius of effect) obviously saw the same thing, otherwise Lelouch wouldn't have shit himself like that and someone would've figured out the hax>>11112373
nah, we know the exact radius of what was shown in episode 3. Measure it out using the character heights as a reference and it's around 10 meters, which is also what they've been saying in Japan. We also know the average Knightmare is just under 5 meters tall, so the radius of effect would be (assuming his Geass works exactly the same in the Knightmare as it does when he's not in it) twice the height of his Knightmare.