Bumper to Bumper catches a fleet of coin-operated dodgem cars parked nose to tail on Diamond Island, the amusement park photograph framing Phnom Penh's fairground floor before the gates reopen for business. No rider sits in any of them: the dodgem cars sit fender to fender, packed tight. idling wheel to wheel the same way real traffic idles past the gates outside. And the visual grammar of the road survives anyway, taillights and painted chevrons and a cherry-red stripe keeping the fairground's toy traffic jam alive on wheels that won't turn again until a small hand takes the wheel.