This is not a fad, car companies are staking their futures and spending billions on developing EV's. There was a lot less infrastructure for IC vehicles when they were first introduced.
"The president of Ferrari, Sergio Marchionne, who is also the CEO of the manufacturer Fiat Chrysler, has said one of the brands the group owns is also likely to enter FE. Maserati, whose cars will be electrified by 2019, is a strong favourite. It is part of a wider process. Marchionne also announced last week that half of the group’s entire fleet, which includes Alfa Romeo, Dodge, Chrysler and Fiat, would be electrified by 2022."
Source, The Guardian F1 coverage.
Plug in hybrids and EV's with IC backups will be part of the future, I don't see one technology dominating it completely for some time, if ever.