To be fair, they technically already do when you take it with yours with you somewhere.
As long as the mounting plate is sufficiently isolated from the rest of the car's movement, they shouldn't need to suffer any vibration in excess of what they'd endure under normal use and transport conditions.
Of course, it's still a better situation for consumers: if the iPad does die, you can replace it that same day with an off the shelf part (or you plug your phone in for that day instead), it's trivially expensive compared to what head units of similar type cost (it's actually even cheaper if you can use a bargain-basement 50-dollar Android tablet instead of an iPad), and it's something that you can upgrade as you get the money to do so.
Plus, it also heavily discourages manufacturers from pulling a Tesla and refusing to start your car before you update the infotainment software, which is also a shockingly anti-consumer trend.
As long as the mounting plate is sufficiently isolated from the rest of the car's movement, they shouldn't need to suffer any vibration in excess of what they'd endure under normal use and transport conditions.
Of course, it's still a better situation for consumers: if the iPad does die, you can replace it that same day with an off the shelf part (or you plug your phone in for that day instead), it's trivially expensive compared to what head units of similar type cost (it's actually even cheaper if you can use a bargain-basement 50-dollar Android tablet instead of an iPad), and it's something that you can upgrade as you get the money to do so.
Plus, it also heavily discourages manufacturers from pulling a Tesla and refusing to start your car before you update the infotainment software, which is also a shockingly anti-consumer trend.