Phones for my parents

I apologize for the long and winding post.

My mother wants to buy a new car. She is an adamant Honda-driver and her previous Honda came with SiriusXM, which she got used to using, as she hates conventional radio. But it turns out that new Hondas no longer feature satellite radio except on high-end lines, so she's decided she'll just get a smartphone and try to use Pandora in the car during her occasional drives.

She's a luddite and hates cell phones of all kinds. Her and my father both, of course, have dumb phones. Her usage is pretty limited and she only makes a few minutes of calls and few texts per month, as little as possible. Obviously, adding a phone that can stream Pandora to her car and adding that additional data will be a change. Her current plan through Consumer Cellular is some tiered garbage where she gets 200 talk minutes and 1 Mb of data per month.

She was talking about getting a Moto G and having to up her plan by another $20 per month, but I'm trying to get her to move over to Ting, a better choice for her limited usage, and I'm willing to get new phones for her and my dad on my dime. I suffer from an ability to pick between this many phone options, though, so I turn to you for help.

So, what phones would you recommend for an old man who can barely use any cell phone and only needs it in case of emergency (preferably something in the stupidly-simple, cheap clamshell range) and for an older woman who hates cell phones but needs a decently simple, snappy smartphone that she can use to stream Pandora (assumedly over Bluetooth)? I want to keep the cost low, but get them something fairly nice that isn't going to be horrible to use or requires it to be beaten up to get, used, at a decent price.