Acceleration is only a minor aspect of supercars ! Road handling at speed is the raison d'etre !
As for electric cars  - their high acceleration is merely due to the intrinsic characteristics of DC motors - extremely high starting torque and implied extremely high battery current ( which may not be good for battery life expectancy ). It is not a particularly brilliant engineering achievement in itself. Try doing 340Km/Hr on a race course in a Tesla  .-)