Madness on Wheels: Rallying's Craziest Years. Back in the 1980’s rally was more popular than formula 1 in a large part thanks to the “Group B” cars which was essentially a de-restricted class allowing competing manufacturers to build ever more beastly machines in the strive to win the coveted title. There was nothing like this before and there will probably never be again.
The Group B class was introduced in 1984 and for four mad years fearless drivers battled to control the ever increasingly powerful machines. The madness ended in 1986 after a string of brutal accidents involving spectators, it seems ambition had gone too far. The final straw for Group B was on 2 May 1986 after the death of Finish driver Henri Toivonen and his co-driver Sergio Cresto.