Traffic surfing can be accomplished with any sort of vehicle, but is best done with something relatively small and light, with lots of power, such as a motorcycle. Essentially, it involves moving through traffic at a pace faster than the traffic is moving. This is done by exploiting the smallness and high acceleration of your vehicle. Extra points are granted for actaully using one's turn signals. It's annoying to cagers, but is slightly less squidly than lane splitting.