想問下點解ＤＴＭ

_____DTM_____

The Deutsche Tourenwagen Masters (DTM, German Touring Car Masters) is a touring car racing series based in Germany, but also with rounds elsewhere in Europe.

From 2000 onwards, this new DTM continued the former Deutsche Tourenwagen Meisterschaft (German Touring Car Championship) and ITC (International Touring Car Championship) which had been discontinued after 1996 due to high costs

Continue in "http://en.wikipedia.org/wiki/Deutsche_Tourenwagen_Masters"

_____WTCC_____


The World Touring Car Championship (WTCC) is an international Touring Car championship organized by the FIA.

The WTCC was first held in 1987 concurrent to the long-running European Touring Car Championship (ETCC). It was open to Group A cars, with races held at Bathurst, Calder Park Raceway (using both the road course and the then newly constructed Thunderdome) and Mount Fuji. The Drivers Championship was won by Roberto Ravaglia in a BMW M3 and the Entrants Championship was won by the Eggenberger Texaco Ford No 7 entry, which was a Ford Sierra. The series was not considered a success, due to the high costs involved, and lasted just a year.

Continue in "http://en.wikipedia.org/wiki/World_Touring_Car_Championship"

WTCC 係 international 既, 而DTM 只係俾 German cars 參加. 其實both race 歷史都很長.
用以上website繼續閱讀

DTM只係俾 German cars 參加, 以前Alfa 155都有落場。

Answer is irrelevant to the question at all, does not explain anything.