The Volt and ELR put every other plug-in hybrid to shame. Ford, Mercedes-Benz, Porsche, etc. all only get 15-20 miles per charge. The Prius Plug-in only gets 8-11. Even the newer plug-in hybrids announced at the LA Auto show last month are all 15-20 miles, if they can even be run on electricity alone at all. More disappointing is that Cadillac's new CT6 flagship will only get 30 EV miles, and there's a lot of evidence that it can't be driven aggressively without using the gas engine in some capacity.
Compare all of that to the Volt and ELR that have 53 and 39 EV-only miles respectively, and don't need the gas engine
at all to run at any speed or acceleration (unless you want to go 0-60 in 6.4 seconds in the ELR, of course). What Cadillac doesn't advertise is that the ELR can actually hit about 6.8 seconds 0-60 in EV only mode, but only when the battery is at least at a 50% state of charge, and the driver has to allow some time between aggressive accelerations. Otherwise, it's closer to 7.5 seconds.
When I had my Volt and ELR, I probably filled the gas tank twice per year. For me, that's an equitable trade-off for not having any range anxiety. People who are so fanatical that even that much gas is heresy are missing the bigger picture. These EREV plug-ins are a fantastic gateway drug to the Nissan Leaf, Ford Focus Electric, Tesla S/X, etc. Had I never owned a Volt or ELR, there's no way my wife would have bought a Toyota Rav4 EV nor have reserved a $130k Model X.
If not for Cadillac's disastrous C.U.E. system, I'd still be in my ELR. Such as shame that Cadillac shot itself in the foot with initial pricing for the 2014 model, that awful "Poolside" ad during the Olypmics, and a complete lack of marketing or enthusiasm for that car. I don't even know if Cadillac made a push to get reviews of the 2016 model, because almost every review or article I find that references the 2016 model is just a rehash of the 2014 review. No mention of the increased output or range, the addition of Apple CarPlay and Siri Eyes Free, and the other improvements.
Compare that to how enthusiastic Tesla and its customers are, despite the Model S and Model X costing twice as much as the 2016 ELR yet lacking the jaw-dropping Batmobile exterior and opulent interior.
Don't forget that if you pay MSRP for the ELR, not that any sane person would, it would cost more than an S70D. Anyway, the ELR is actually an overweight Volt, so I'd imagine sanity would favor the Volt.
Dude, the S70D is $10,000 more than the 2016 ELR! And if you think the ELR is just a heavier Volt, then you haven't ever seen or driven one.