Toyota's target date is 2015. The Germans threw in the towel gave them their research and will pay licenses.
Granted it will be super cars like the Supra at first. But with efficiency before weight consideration often estimated at 70% better than the ICE. The ice it will not last much longer.
We will soon see what they have. This is why Toyota has not bet heavily on a ng ICE for the American market. If they both fuel on natural gas and one is 70% more efficient? Yea.