In 1972 , aged 17 , he passed his test and took up motorsports in racing , rallying and rallycross .
Driving from the age of 8 , Smith raced at the age of 14 in grasstrack events , building his own cars .
In 1972 , aged 17 , Smith passed Smith 's test and took up motorsports in racing , rallying and rallycross .
Driving from the age of 8 , Smith raced at the age of 14 in grasstrack events , building his own cars .