It can depend on the weight and dimensions of the car and the lift itself. Generally speaking, if the car is less than 3,000 pounds and does not exceed the lift's weight capacity, it can be safely stored. If the car is heavier or if the lift has a weight limit more significant than the car's weight, it may not be safe to store the car on the lift. In this case, the car would need to be moved to a lower location on the property or transported off-site. Always consult with a professional before storing a car on a lift.