I made the same move. 2007 Saab 9-3 ARC to a 2013 Volt.
At 20,000 miles per year, I was burning 830 gallons per year. That dropped to about 100. Factual. Empirical. Inarguable even if reposters like to just argue for the sake of arguing. My change to a Tesla saves the planet 100 gallons per year. My Volt saved the planet 730 gallons.
My oldest son traded up to a Volt from a Mitsubishi Galant. That was another 500 gallons. My younger son traded up from a beater with a heater, taking another 600 gallons per year off line. My beautiful bride idled her Expedition Eddie Bauer to drive a Volt - taking yet another 1,100 gallons of gasoline per year off line. We still have the Expedition as we need it to tow our boat in the summer. But day to day, it just sits there looking sad.
In my family of 4 adults, the Volt took 3,000 gallons per year away from the demand-curve. My little immediate family - 3,000 gallons per year. Think about that. My Volt was (all numbers after tax incentives, or purchased used) $30,000. My bride's Volt was $19,500 new as a 2014 new old stock hold-over deal. Both of my sons paid $16,000 for their used Volts. Add that all up and all 4 cars cost $81,500. That's about what a new basic 85 reasonably optioned costs, after federal tax credit. All 4 Volts. One pretty basic Tesla. In order for one pretty basic Tesla to take 3,000 gallons off line, it would have to travel 75,000 miles per year replacing a gas car that got 25mpg.
Being a BEV fan is OK.
Being a BEV purist and sneering at PHEV's that serve a HUGE purpose in this transition stage just because...purist...is not ok.
Being a reindeer is ok.
Bullying another reindeer because he has a shiny red nose is not ok.