Apple has a ton of SKUs. The iPad 2 alone is offered in 18 variations (White/Black, 3G/Wifi, CDMA/GSM, 16/32/64GB). Want a MacBook? There are nine models to choose from (4 Airs and 5 Pros) and each come with a bunch of customizations (CPU, RAM, HD, accesseries, etc).
But Apple tends to show off 1 or two models and let you choose the options yourself. Tesla should just focus on two models and leave the options below the fold.
I think it's hard to compare to Apple because they don't make cars. People spending > $50,000 on a car will tend to want more choices than people spending $500 on an iPad.