Police have seized 13 supercars, including Lamborghinis, a Ferrari and a Porsche, following reports of dangerous and anti-social driving on the M11. Officers pulled over the vehicles at Junction 8 and issued 13 warnings for anti-social driving (Essex Police/PA)Witnesses said the vehicles were accelerating at great speed before slowing down suddenly, with drivers allegedly braking heavily and disrupting the flow of traffic, Essex Police said. Advertisement AdvertisementAdvertisement AdvertisementThe drivers were also accused of bunching together and using the hard shoulder to undertake other road users, the force added. The force received multiple reports from 'concerned' members of the public about a convoy of high-performance cars (Essex Police/PA)Officers pulled over the vehicles at Junction 8 and issued 13 warnings for anti-social driving. Sergeant Will Willsher said: "The behaviour reported to us was not only anti-social but potentially placed other road users at serious risk, especially on a busy motorway during peak travel times.