P-Plate driver gets mum's car impounded

A Melbourne P-plater has a lot of explaining to do after he was caught driving his mum's car more than 100 kilometres per hour over the speed limit.

The 22-year-old Caulfield man was clocked travelling at 204km/h in a 100km/h zone on the Monash Freeway late on Tuesday night.

His mum's Volkswagen Golf has been impounded and he's expected to be charged on summons with speeding offences as well as not displaying his P-plates.