If down in San Diego, I can see these area being a great spot
1) Corner of I15 and CA56 (around Rancho Penasquitos / Camel Mountain Ranch
2) I agree, off the I5 around LA Jolla would be a good spot. Very popular in/out traffic in that area. (I5/CA52/La Jolla Pkwy)
3) I prefer this over #2 - Around Mission Bay I5/I8.
4) Some where around Petco Park would be very popular, especially during Comic Con season.
5) They should offer 5-10 free Destination Charger to San Diego Zoo / Balboa Park. There some EV generic there, but something more specific to Tesla would help too.
6) I15/78 would be good around Escondido.