Many people have different needs, and EVs are a bad fit for tons of folk.
My ideal vehicle would be a plug in hybrid with about 40 miles of EV range. Most of my trips are short and frequent. The 5 mile round trip to get kids to school, for example. These short trips are horrible for ICE efficiency; the engine barely has time to heat up properly before being shut down.
For the few longer trips that I do, gasoline probably makes more sense than hauling a battery that gets rarely used.
Graphene just describes an electrode type that can be used in a battery. There are a ton of different plausible chemistries that can use graphene as a component.
I've not played with any graphene containing batteries. Right now I'd just consider graphene a marketing buzzword.
Jon