99% of the Ubers/lyfts I've been in are trips to the airport - and most of those cars had worn out suspension, bald tires, or raw wheel bearings. Some even to the point where I wasn't sure the vehicle was going to get me where I was going. It doesn't help that in the midwest the roads are 3rd world quality.
The business model is flawed and I would rather use a company that maintains a vehicle fleet where a mechanic is involved and knows if a vehicle should not be on the road.