>> oh! >> never experienced anybody drive on the right-hand side on that road ever. >> oh, she's going to hit! >> this is the first time ever. >> jack and his son's worst fears come true. she mows down a man crossing the road and never slows down. >> he was looking to his left-hand side. and he didn't expect a vehicle to be coming from the wrong side of the road. >> oh! my god! >> jack and raj make a split-second decision to get involved even further. >> you want to chase her? >> yeah, i got the number. >> raj jumped out to help the victim and call an ambulance as jack drives off, he believes the man may have been killed. >> police, police, urgent. >> jack phones the police. >> i shot off behind her. with the intention of getting a registration plate. >> oh, they're driving off again. okay.