This is a 40amp charger and charges (my car anyway) at about 35 to 40 miles per hour plugged in. But as soon as another car plugs in to the 2nd Tesla destination charger - the charge rate drops to about 15 miles per hour. So it appears the 40 amps are split between the 2 Tesla charging stations when 2 cars are plugged in. And that makes charging not as effective. Rather h