Eurogamer was one of them:
Official Nintendo Magazine:
http://www.officialnintendomagazine.co.uk/52188/previews/mario-kart-8-preview/
Eurogamer:
http://www.eurogamer.net/articles/2...rio-kart-8-retro-tracks-compared-to-originals
Metro:
http://metro.co.uk/2014/04/03/new-m...etro-tracks-no-blue-shells-confirmed-4687301/
lol