Police are to crackdown on thrill-seeking teenagers who copy computer game car chases through built up areas at speeds of up to 110mph before posting their exploits on the internet.

Police say dozens of teenagers have been injured and some have died while trying to replicate scenes from racing simulators like Gran Turismo and Need for Speed.

Mobile phone recordings of reckless speed-fixated youths have been posted on websites such as YouTube and police are worried the blurring between reality and fantasy has gone too far.

"Parents have a responsibility to ensure their children understand the difference between fantasy and reality, as illustrated in some television programmes, films, and computer games and reality by the time they are old enough to apply for a licence." said John Vine, Chief Constable of Tayside Police.

"All dangerous driving posted on the internet will be robustly investigated."