I predict they'll sell like hotcakes. The only issue is public infrastructure. Nearly everytime I've hung out with my EV-driving buddies, we've always gotten stuck somewhere waiting for a charger to become available. Tesla has tried to circumvent that with their 30-minute Superchargers so at least you're not waiting very long, but my state only has like one or two in the whole place.
I do think one big benefit is that Tesla weatherproofs their batteries. My buddy's Honda Fit EV gets about 20 miles of range when it gets really cold in the winter, even when fully-charged. Plus having 200 miles available is a much more realistic range than today's 80-mile models.
One car I'd like to see improved is the Chevy Volt. Outside of the Honda Accord hybrid, I think it's the best design on the market. You get some EV range and then as much gasoline range as you want. If they could do like an 80-mile range instead of a 30-mile range & add a better engine so it's not so slow, that'd be a real winner.
I don't expect traditional car businesses to offer a "real competitor" to Tesla, at least not before model 3 hits the streets. Looking at mass produced EV's they are all lower tier designs and their EV abilities reflect their inferior status in respective lineups. So And frankly, I don't want them to. Tesla doesn't need further incentive, the bar was set high and was met with Model S. That car is neck to neck with finest of sedans out there. 2nd car they ever made.
With the model 3 Tesla is to penetrate the mass consumer market and frankly that has me excited. I was converted to EV's when a friendly owner drove me for a lap around the west county mall in STL (the only one I ever saw here).
Until recently, I was just another guy taking the motorist tolls imposed on us but now I just want to jam a MAF sensor up everyone in the big oil business.
CEL can go to hell too. I'm sure "check battery light" with it's never failing LED's is around the corner but at least it will look different. And at least in the beginning it will be Tesla only meaning you want have to deal with morally bankrupt managers and driven crazy to get a $472 charge reversed because they "forgot" that both a recall was issued and a warranty was extended on the MAF sensor. Anyway...
I'm really looking forward to the 3. I'm in love with the model S design language. I do think 3 will match or beat BMW's 3 in many categories but with the smaller chassis, there is the battery size and power/range issue. Down the road, I would want a 100 kWh battery to completely kill range anxiety but with the 3 I would settle 200 miles.