Or part ownership like a timeshare - this is popular with light aircraft and other things.
Think of following the model of zipcar and all the other pay to use services out there. Not quite as popular as the London Bike schemes perhaps.
Web site
Create account and add card.
Flexible rates for different times of the day or days/holidays etc
Book, collect, use, return.
Use camphone to capture on collection and return for safety.
Leave a list of the bits that are rattling, or video them 8)
Just the same engineering as the zipcar stuff.
Open it up to dealers, airport centre in conjunction with Hertz, (hurts, perhaps) a few key "brand identifiers" locations (Danesfield, Luton Hoo etc)
Why should it be an ownership experience only given the way the world is progressing?
When the world is becoming more transient and the up and coming selfie generation need more and more content to seem important in their posts something with real traditional roots and difference could find a good niche?