The Challenge was unveiled in 2007 at the Frankfurt IAA Motor Show .
The Mini John Cooper Works Challenge is a purpose - built race car , based on the R56 Hardtop , and manufactured in the BMW Motorsport factory located in Munich .
The race car was unveiled in 2007 at the Frankfurt IAA Motor Show .
The Mini John Cooper Works Challenge is a purpose - built race car , based on the R56 Hardtop , and manufactured in the BMW Motorsport factory located in Munich .