As far as someone modifying their Viper and not driving it ... I bought my 1st Viper from a guy that only drove the car to get it modified out of state (to save State sales tax). HE couldn't believe that I was buying it and planning to drive it cross continent home.
I asked him what else I was supposed to do with one of the best driving cars on the planet. He said, "I just fix it up and admire it." I have no problem with that as I bought a car that was in perfect condition with a lot of mods and few miles. I think he was crying when I scraped the nose backing out of his driveway.
To each his own. I certainly got a good deal when I bought his car. I think he spent all his time making the car perfect. He wouldn't let me test drive the car until I was buying it because he was scared I might drive through a water puddle.
Ted