That's one of the main reasons why the Group B rallye has closed.
Crowds became uncontrolable and casualties resulted, the class was shut down.
I cannot imagine how fast these cars would've become considering that most competitors were developping their Evolution model when the plug was pulled.
Ford really had something with the RS200 and Lancia with the Delta S4.
If you wanna learn more about this motorsport era, i suggest you watch "Too Fast To Race"
It's on youtube, a very complete, detailed documentary about Group B Rallye.
Here's Part 1 (of 7)
[ame="http://www.youtube.com/watch?v=hv5Jto1Zdd4"]YouTube - Too Fast To Race - Group B Rally Documentary part 1 of 7[/ame]