Electric needs recharging facilities, only was available in Ca, in the 90's. It could work, don't get me wrong. It depends if they could be mass-produced... and re-charged cost-effectively, on more than a proto-type basis.
As to SUV's, there is a big difference between something like a 4cylinder Honda CR-V, and an 8 cylinder Ford Expedition.
I have a Honda CR-V, and an older Ford F-150, truck doesn't get used much ( 15 mpg), but nice to have available, when needed, otherwise it sits parked.
To go somewhere say 30 miles away ( and back), that's 4 gallons ( or $18 just in gas). It runs only as needed as a truck.