Just a quick bit of napkin maths on the ioniq5 - it’s quite famously one of the faster ones to charge / decent range.

Assuming by the numbers on google are correct

Range of the car is 354 miles (let’s say 350) Car can charge from 10% to 80% in 18 min (let’s say 30 min)

That means it’ll go from 35 miles of range to 280 - giving it range of 245 miles.

If you drive 70 MPH for 3.5hr and take a 30 min break you cover 245 miles every 4 hours.

Which means you can realistically achieve what you are looking for in just under 20 hours.

This assumes every 4 hours you encounter somewhere with a fast charger capable of what you need.

This is all highly theoretical and completely dependant on where you’re driving, but the range is possible.

On a more realistic note, 1200 miles!?! Good lord my legs would be so cramped I wouldn’t be able to walk for days! Good luck with the next trip

I can’t speak for the latter part, but the former is doable. Assuming you actually want to spend a full 24 hours driving. I say this as someone who did nearly exactly one third the distance in one third the time. Depends on your car of course and if you can fast charge. The real world range on mine ended up being a bit less than 200 miles (260 EPA range) going just over 80MPH in Texas, and it had fast charging capabilities.

That said, I wouldn’t recommend it in the vehicle I used. Really need more like 300+ range to make it decent. Cause I had to fully charge at times to make it to the next fast charger and a full charge is at least twice as long as a quick charge, which is typically going from 20% to 80%. Longer range means mostly only having to charge to 80%. That saves a bunch of time.

Typical degradation at 7 years wouldn’t be bad, but with the type of driving you do I expect the degradation will be worse.

I’ve been doing that in my EV for the last 5 years. You won’t get an EV because you are looking for excuses not to, not because they don’t fit your use case.