If you do have the space , keep it as a future classic ( official qualification is 15 years old ) . Take it off road to save costs, buy a car cover for it , and once a month refit the battery , run the engine and drive it up an down the drive to circulate the gearbox oil and turn the tyres .
Once these cars start to appreciate as classics they will make more money than bank interest , but I bet within a year you are driving it again