The point I was trying to make is that I'm wondering if completely refurbing his ancient car would be more expensive than just buying a new Benz. I have no idea, I was just wondering.
I do not believe it would be. People refurbish cars all day long every day.
People refurbish muscle cars for less than the cast of a new car. 20 years old Mazda parts should not be too expensive, particularly for Mazda.