In CA, 91 yr old grandpa with Alzheimer's sold a car to a nonrelative caregiver for only $3000. Car's Kellyblue book value on the low end is $10,000. Can the difference be considered an excessive present gift to caregiver? Is it considered part of her income because of the difference in value? What are the rules in tax and undue influence with respect to present gifts. I've been able to find the rules and laws regarding leaving gifts to caregivers but not present gifts. Thank you in advance for any thoughts on the matter.