To be honest I’ve had my eye on a magnetic car mount that charges wirelessly but I think it was like $60. I expect if one was made with MagSafe it would be more but if it was good I wouldn’t care. MKBHD had an unboxing and talked about MagSafe but he didn’t think the magnet was strong enough. If it is strong enough that would be awesome.
A Belkin car vent mount was briefly shown during the presentation. So they've apparently thought about it.
I've used the Scoshe magnetic Qi mount with corresponding Speck case for a couple years and it's been decent. I'll be interested to see what becomes available in that space. Vent mount doesn't work for me though - in Georgia I need every ounce of AC that I can get.