Surprised that this engine change was done without a test mule other than probably the Ferrari which we saw in December. The teams could have modified a car for the manufacturer to test as the are not covered by the testing agreement.
The engine development schedule is also strange as they were not ready 6 months back. I remember the BMW engine in early 1999 in preparation for 2000. Renault I guess were too cocky in their ability design a turbo engine. Guess the first thing to do would be to drop the engine name from Energy F1