Have any of you timed your Spark EV to 60mph? I have a 2015 Spark EV 2LT and I have been getting consistent times in the 6.8 - 7.0 range. I know this is faster that what GM has posted as 7.2.
Warren from insideevs comment tested to 6.8 sec as well. He said the biggest problem was traction.
I think Chevy figure is based on X% charge where X isn't known. If you start with >80%, I think you might do better than Chevy's claim. Or if you have <50%, you could do worse.