Police footage of man and boy starting car race
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Street racers caught on camera by police cameras

2 November 2012 Last updated at 10:07 GMT

Illegal car racing on public roads will eventually lead to fatalities, according to police in Birmingham.

'Street racing', where hundreds of drivers use A-roads as unofficial race tracks, is a problem in a number of areas across the UK.

West Midlands Police have covertly filmed street races as part of a crackdown on the problem and gave the BBC exclusive access to the footage.

Jenny Hill reports.