I've built two electric cars and one electric m/c, working on a second m/c now for a neighbor. All with cheaper lead-acid batteries.
When I bought the NC it was between that and the Zero, but the NC won out. The Zero has comparable acceleration to the NC, will go 80 or a bit more on a fresh charge and they claim 100+ miles on a charge (at 70 mph). The Zero would fit my daily 23 mile one way commute nicely, but you will never go touring on one. 3-4 hours to recharge, unless you buy the fast charge option, which shortens battery life. The zero costs 2x the NC, and there is no body of actual use data to indicate how long the battery pack actually lasts. It costs $thousands to replace. The lead acid conversion I did on a Suzuki 600 is fun to ride around the neighborhood and sometimes out to bike night where it always draws a lot of comment about 50-50 favorable/unfavorable. About 50 mph top speed quickly dropping to 40-45 after partial discharge and gets around 40-50 miles on a charge. It uses golf cart motor and controller (36V system), no transmission - one speed only. It accelerates like, well - a golf cart. I scrounged all of the parts but the three deep cycle batteries and build cost not counting my time was under $600. I have considered putting a playing card in the spokes like we used to do with bicycles *L*
A major problem with EVs in general is that you don't want to run out of juice unless you know someone with a tow truck, so all trips must be planned. I commuted for a year almost daily in the first electric car, using the gas car on the few days when I needed to take a side trip off my regular route, and it was very satisfactory. A real pleasure in stop and go traffic compared to a gas car. The cars go 60-65 for the first model - direct drive to the driveshaft (no transmission) and 90 plus for the second one which kept the original 5 speed. But at freeway speeds both get only about 30 miles on a charge. Few lead acid powered EVs do any better in range at freeway speed, but most can do twice that at 45 mph or less. I have NEVER noticed an increase in the electric bill over normal variation with any EV, even when I was running the car every day. And yes, careful analysis will show that electric can be dirtier than a modern gas vehicle if the juice comes from a coal plant, but at least the option exists to power it with clean solar or hydro power if the utility can provide it. I'm moving out west soon and my trip to the nearest town will exceed the range of any lead acid EV and lithium technology is too costly and immature technology for me, so for now I am out of the EV business. But I do believe that electric vehicles will have a significant place and high percentage of utilization in the near future and with that prices will come down and range will continue to improve.
Oh yes, and there is the matter of reliability. When I convert a car to pure electric I remove a hundred or more moving parts that can fail and leave you a pedestrian and replace them with basically three moving parts: the motor armature and two motor bearings. No clutch, starter, $#%^ carburetor or fuel injectors, muffler, oil to change, water to freeze or leak, water pump, fuel pump, fan belt, engine bearings, rings, valves, etc. etc. Instead there are some electrical components that if properly designed will last for the life of the vehicle. Batteries do need to be watered weekly if they are flooded lead acids, and will need to be replaced every few years at ~$1000 (lithiums require no service and claim to last longer, but are MUCH more expensive and require a much more costly charging system. NOTE that this is NOT the case with a hybrid, which still has all of those gas car parts PLUS a more complex electrical system (no computer controls in my EVs), and few if any hybrids will get you home if either system fails. Hybrid is a poor idea and will not stand the test of time, in my opinion.
E-bike is a nice toy, but for a person who can pedal it just makes you lazy. Find one that goes 80 mph and it would be horribly dangerous, but I might still be interested.