M4 crash driver Karl Josiah, 23, lay dead in his Renault Clio for almost a week after skidding off motorway

Pictured: Young driver, 23, who lay dead in his Renault Clio for almost a week after skidding off motorway Karl Josiah is believed to have skidded off the M4 in heavy snow on Jan 18Car wreckage lay undiscovered until the ice began to thaw on Jan 23 By Suzannah Hills PUBLISHED: 17:16 GMT, 1 February 2013 | UPDATED: 17:49 GMT, 1 February 2013 Found: Karl Josiah's body is believed to have been in his snow-covered car for six days before he was discovered A young man lay undiscovered in his car for nearly a week after skidding off the motorway in snow and suffering fatal injuries. Karl Josiah, 23, was discovered dead inside his Renault Clio after the car came off the busy road and tumbled down a steep embankment. The mangled wreckage of the black car was then covered by a thick blanket of snow for up to six days after up to 10cms fell.