I don't think all electric vehicles will happen for awhile. We don't have enough sustainable resources to produce the batteries necessary if we're using Lithium Ion batteries.
That, and the TESLA is WAY too expensive for what it is. They're not out to be revolutionary, they're out to cater to the elite. If they were in it for the environment, they would have license something cheaper than an Elise. Maybe a Solstice/Skye for the roadster and a Cobalt/G6 for a family vehicle. I have mixed feelings about the exemption...On one hand it's great to see someone leading the charge on zero emissions vehicles...On the other they're not catering to the average consumer, so what good is the exemption?