oh so it's in a vehicle and cold weather testing is being done like other OEM's on a complete vehicle? Lab is only part of equation. Need to test whole vehicle in cold and hot climates.
We know for sure the engine is built and testing in a lab at least as we have seen pictures (These have since been removed as they were not supposed to be released to the public). We also know that the plan is to build about two dozen test vehicles this year which will be driven in all kinds of conditions for full vehicle testing and will eventually include crashing a good number of the vehicles for full crash testing purposes.