Every sanctioning body has their own records. The Loring Timing Association (LTA) has only had a few records set by electric vehicles. The East Coast Timing Association (ECTA) has had a few also. There's been quite a few set on the salt but AFAIK they still class EV's by weight (don't know why!) The LTA (and now ECTA) treat an EV as just having a different powerplant, categorized by voltage (same voltage classes as NEDRA.) For bikes, there are frame classes: production, modified production, altered, etc. So I *think* a stock Zero in the LTA would race in F voltage class (105.7-132V) i.e. PE/E-F which is Production Electric/E (electric, I know it's redundant) in the F voltage division. Add a non-stock fairing and it would become MPS/E-F (modified partial streamline, electric, voltage F), etc. You can also "bump up" in voltage class i.e. run a lower voltage pack in a higher-voltage class. One bike could set a ton of records as most of them are open.
The Lightning went 209 at Mohave so holds the record there. The difference between the paved tracks and salt is that paved tracks do a standing start and on the salt it's a flying mile or kilometer. I can't speak for the other organizations but the LTA measures speed using two sets of timing lights 132 feet apart (same as a dragstrip.) Most places measure one mile but LTA measures 1.5 mile speeds because there's so much shutdown room. Current LTA bike records are at:
http://media.wix.com/ugd/3bd111_5729e405308b45319da5b779870c6bef.pdf (all the way at the bottom.) If you want to poke around the rules, go to loringtiming.com or just post any questions here.