How much longer will you be using those for?
A while, unfortunately. I'm going to drive my current 2003 Acura into the ground, but I seriously doubt I'll be able to afford an electric vehicle when that happens. Complicating matters, living in a relatively rural area the only all-electric that's even close to practical as an only-car is a Tesla, so I'll end up with either a plug-in hybrid at best, or a back-up gasoline junker.
Putting down the Volt (or other plug-in hybrids) is pretty narrow-minded, though. If you charge regularly, the Volt and other plug-in hybrids with 20-40 miles of all-electric range are absolutely capable of handling daily commuting without using any gasoline at all, and don't require a back-up means of transportation for road trips. It's not perfect, but it's extremely practical in the short-to-medium term.
If I could afford it, a fuel-cell hydrogen vehicle would be nice, of course--we built a hydrogen fueling station where I work and have been driving a Toyota prototype for years, so I can vouch for practicality and actually can get gas--but even the new lease-only Hyundai is pretty expensive.
Of course, none of that is relevant to where I can use ApplePay
now. By the time I'm driving an electric vehicle, NFC may well be ubiquitous in the US, but right now, as of today, I still can't buy gas with ApplePay.
...unless I have an electric vehicle, ironically. All of the commercial charging locations locally accept NFC credit cards, and I even tested to confirm ApplePay works at one (even though I don't have anything to charge there).