It's not exactly slow, completing its run in about 9 minutes, 8 seconds (using the "bridge to gantry" standard)--not the 9:40 time quoted by many other sites. That's only about 6.7 seconds slower than the 9:01.338 electric lap record set by the Peugeot EX1 EV Concept car.
It's not exactly fast, either, though, coming in about 45 seconds slower than the turbocharged version of the Chevrolet Cobalt SS, a very affordable, mainstream front-driver. The Cobalt SS even did the lap in 9:02 on a wet track at the hands of John Heinricy.
As our sister site AllCarsElectric points out, however, it is quicker than the 9:52 lap time set by the MINI E prototype. In other words, it's quick, for an electric car, but not yet into the realm where an enthusiast would consider it a real option. The idea of running the 'Ring with nothing but the sound of whistling wind and tires screeching, however, is intriguing.