BMW has not let slip a single detail about the Z4 replacement, affectionately called the Z5 by some people. We don’t even know what it’s going to be named.

The collaboration between the German automaker and Toyota may result in a much closer partnership than you might expect. According to the latest rumor, the Z car will be built on the same line as the new Supra. Which one? Not known, but there will be a lot more differences be…