I currently don't own a car as I just got my license a couple of months ago, but if I did...
It would depend on how much it would improve said pet's quality of life. If it would give me many years with the pet and they would be able to be comfortable and healthy again, perhaps. But if after going through that I'd only get a month give or take and they would suffer even with the treatment, then no.
Are you curious about trying anything new in the bedroom? Or out of?