As for electrics, VW is interested. Press the on the link and scroll down, there will be a link to an article in VW's future in electric and US rallycross in the quote.
"Welsch also confirmed that VW was sitting on a steering group developing a championship for all-electric rallycross cars in the future. "We're looking at, yes," he said."
http://www.autocar.co.uk/car-news/mo...y-championship