The thing about traffic jam is everyone on the street is jammed. You move so slow as if a snail is walking on the snow. No matter what car you drive, either a Toyota Corolla (1980) or an UberX or a Tesla Model 3, you share the same street. There is an exception, though. A flying car! 

A friend, Chhor Veyhong, nicely put it here: Traffic Jam in Phnom Penh.