I dearly love my Tesla, but I am also quite proud that at $56K after tax credit, but including license, registration and delivery charges, I possibly have the cheapest Tesla every delivered.
On Dec 31, 2012 right before the price increase I ordered mine. I got a 40KWH battery (no longer available) which saved me $10K) the only options I got were leather seats, air suspension and blue paint. My PV charges the car, and there is no maintenance needed other than buying and rotating tires. So while I can't, with straight face, claim it is Mustachian it isn't as crazy expense as it appears a first. Now days you get a Tesla for $65-70K after rebate, you just have to skip the expensive options like the tech package, leather trim, moon roof etc.
It is an amazing transportation device (car is just so 20th century). Literally every person who I have take for a ride has been blown away, mostly the people who aren't "car people". At least 2 are seriously considering buying one (one who could afford to and one who really shouldn't).
The software upgrade are really one of the coolest things about the car. In the almost year I've owned the car, it is much better product now than when I bought thanks to scores of improvement which get delivered automatically every couple of months.
That said unless you have lots of money and/or really need a big car, I'd wait until 2016/2017 to get the 3rd generation Tesla at <$40K I am sure it will be amazing.