Wet roads, traffic, a passenger, and a 17-year-old allegedly driving at almost 200km/h in a turbocharged Mercedes-Benz.A red P-plater has been caught by police allegedly driving at more than 100km/h above the legal limit.Highway Patrol officers claim to have observed the 17-year-old driver driving in the overtaking lane of a 110km/h motorway – despite his provisional licence limiting him to no more than 90km/h.NSW Police allege the Mercedes-Benz A250 then accelerated up to 198km/h when tak