Some of you guys...Jesus.... DTM is not about German cars only, it's a touring car championship.
Anyway, the whole DTM situation is hilarious because EU and Germany (same thing really) is all about cutting costs and making motorsports less expensive and more efficient....then you have DTM which is THE German touring car championship, and it's probably the most expensive motorsports in EU right now. I bet even GT3 series is cheaper than DTM.
That's Germany for you right there. No offense to Germans, you're all great, i just hate this double standard policy Germany has imposed on pretty much every other motorsport, except their own.
Anyway, Aston leaving DTM is great news and i hope the rest will follow as well until DTM starts doing what even F1 does, cutting costs.