W8MM:
 All I know is that the 918 as now firmwared is wayyyyy faster than any car I've ever driven.  My Carerra GT would get to maybe 155 mph at the end of the back straight.  The 918 hit 171 in the same place with cold ~45F conditions (not favorable for exit speed from the preceding corner).  It's a real monster, yet soooo easy to drive.

 

So I wonder if this was the result of really positive long term durability testing of the electric motors or a planned upgrade?